diff --git a/tests/end2end/features/backforward.feature b/tests/end2end/features/backforward.feature
index c85ede539..d6699fbff 100644
--- a/tests/end2end/features/backforward.feature
+++ b/tests/end2end/features/backforward.feature
@@ -13,14 +13,14 @@ Feature: Going back and forward.
         And I wait until data/backforward/2.txt is loaded
         And I reload
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - history:
                 - url: http://localhost:*/data/backforward/1.txt
                 - active: true
                   url: http://localhost:*/data/backforward/2.txt
-	    """
+        """
 
     # https://travis-ci.org/qutebrowser/qutebrowser/jobs/157941720
     @qtwebengine_flaky
@@ -31,7 +31,7 @@ Feature: Going back and forward.
         And I run :back -t
         And I wait until data/backforward/1.txt is loaded
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - history:
@@ -43,7 +43,7 @@ Feature: Going back and forward.
                 - active: true
                   url: http://localhost:*/data/backforward/1.txt
                 - url: http://localhost:*/data/backforward/2.txt
-	    """
+        """
 
     Scenario: Going back in a new tab without history
         Given I open data/backforward/1.txt
@@ -51,14 +51,14 @@ Feature: Going back and forward.
         And I run :back -t
         Then the error "At beginning of history." should be shown
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - active: true
                 history:
                 - active: true
                   url: http://localhost:*/data/backforward/1.txt
-	    """
+        """
 
     Scenario: Going back in a new background tab
         Given I open data/backforward/1.txt
@@ -67,7 +67,7 @@ Feature: Going back and forward.
         And I run :back -b
         And I wait until data/backforward/1.txt is loaded
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - active: true
@@ -79,7 +79,7 @@ Feature: Going back and forward.
                 - active: true
                   url: http://localhost:*/data/backforward/1.txt
                 - url: http://localhost:*/data/backforward/2.txt
-	    """
+        """
 
     @flaky
     Scenario: Going back with count.
@@ -91,7 +91,7 @@ Feature: Going back and forward.
         And I wait until data/backforward/1.txt is loaded
         And I reload
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - history:
@@ -99,7 +99,7 @@ Feature: Going back and forward.
                   url: http://localhost:*/data/backforward/1.txt
                 - url: http://localhost:*/data/backforward/2.txt
                 - url: http://localhost:*/data/backforward/3.txt
-	    """
+        """
 
     Scenario: Going back too much with count.
         Given I open data/backforward/1.txt
@@ -124,7 +124,7 @@ Feature: Going back and forward.
         And I run :back -w
         And I wait until data/backforward/1.txt is loaded
         Then the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - active: true
@@ -140,7 +140,7 @@ Feature: Going back and forward.
                 - active: true
                   url: http://localhost:*/data/backforward/1.txt
                 - url: http://localhost:*/data/backforward/2.txt
-	    """
+        """
 
     Scenario: Going back without history
         Given I open data/backforward/1.txt
diff --git a/tests/end2end/features/completion.feature b/tests/end2end/features/completion.feature
index 81df5bb1d..5e6b47dce 100644
--- a/tests/end2end/features/completion.feature
+++ b/tests/end2end/features/completion.feature
@@ -91,10 +91,10 @@ Feature: Using completion
         And I run :tab-move 1
         And I run :tab-select hello2.txt
         Then the following tabs should be open:
-	    """
+        """
             - data/hello2.txt (active)
             - data/hello.txt
-	    """
+        """
 
     Scenario: Space updates completion model after selecting full command
         When I run :cmd-set-text :set
diff --git a/tests/end2end/features/editor.feature b/tests/end2end/features/editor.feature
index 8b813667a..8cc9e1550 100644
--- a/tests/end2end/features/editor.feature
+++ b/tests/end2end/features/editor.feature
@@ -15,10 +15,10 @@ Feature: Opening external editors
         And I run :edit-url -t
         Then data/numbers/2.txt should be loaded
         And the following tabs should be open:
-	    """
+        """
             - data/numbers/1.txt
             - data/numbers/2.txt (active)
-	    """
+        """
 
     Scenario: Editing a URL with -rt
         When I set tabs.new_position.related to prev
@@ -28,10 +28,10 @@ Feature: Opening external editors
         And I run :edit-url -rt
         Then data/numbers/2.txt should be loaded
         And the following tabs should be open:
-	    """
+        """
             - data/numbers/2.txt (active)
             - data/numbers/1.txt
-	    """
+        """
 
     Scenario: Editing a URL with -b
         When I run :tab-only
@@ -40,10 +40,10 @@ Feature: Opening external editors
         And I run :edit-url -b
         Then data/numbers/2.txt should be loaded
         And the following tabs should be open:
-	    """
+        """
             - data/numbers/1.txt (active)
             - data/numbers/2.txt
-	    """
+        """
 
     Scenario: Editing a URL with -w
         When I run :window-only
@@ -53,7 +53,7 @@ Feature: Opening external editors
         And I run :edit-url -w
         Then data/numbers/2.txt should be loaded
         And the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - active: true
@@ -65,7 +65,7 @@ Feature: Opening external editors
                 history:
                 - active: true
                   url: http://localhost:*/data/numbers/2.txt
-	    """
+        """
 
     Scenario: Editing a URL with -p
         When I open data/numbers/1.txt in a new tab
@@ -75,7 +75,7 @@ Feature: Opening external editors
         And I run :edit-url -p
         Then data/numbers/2.txt should be loaded
         And the session should look like:
-	    """
+        """
             windows:
             - tabs:
               - active: true
@@ -88,7 +88,7 @@ Feature: Opening external editors
                 - active: true
                   url: http://localhost:*/data/numbers/2.txt
               private: true
-	    """
+        """
 
     Scenario: Editing a URL with -t and -b
         When I run :edit-url -t -b
diff --git a/tests/end2end/features/history.feature b/tests/end2end/features/history.feature
index 603f0c3e0..d965e3e81 100644
--- a/tests/end2end/features/history.feature
+++ b/tests/end2end/features/history.feature
@@ -9,10 +9,10 @@ Feature: Page history
         When I open data/numbers/1.txt
         And I open data/numbers/2.txt
         Then the history should contain:
-	    """
+        """
             http://localhost:(port)/data/numbers/1.txt
             http://localhost:(port)/data/numbers/2.txt
-	    """
+        """
 
     Scenario: History item with title
         When I open data/title.html
@@ -23,10 +23,10 @@ Feature: Page history
         When I open redirect-to?url=data/title.html without waiting
         And I wait until data/title.html is loaded
         Then the history should contain:
-	    """
+        """
             r http://localhost:(port)/redirect-to?url=data/title.html Test title
             http://localhost:(port)/data/title.html Test title
-	    """
+        """
 
     Scenario: History item with spaces in URL
         When I open data/title with spaces.html
@@ -76,10 +76,10 @@ Feature: Page history
         When I open data/hints/html/simple.html
         And I hint with args "--add-history links yank" and follow a
         Then the history should contain:
-	    """
+        """
             http://localhost:(port)/data/hints/html/simple.html Simple link
             http://localhost:(port)/data/hello.txt
-	    """
+        """
 
     @flaky
     Scenario: Listing history
diff --git a/tests/end2end/features/utilcmds.feature b/tests/end2end/features/utilcmds.feature
index 0dfe0b9df..3e6ac2afb 100644
--- a/tests/end2end/features/utilcmds.feature
+++ b/tests/end2end/features/utilcmds.feature
@@ -143,10 +143,10 @@ Feature: Miscellaneous utility commands exposed to the user.
         And I run :hint-follow a
         And I wait until data/hello.txt is loaded
         Then the following tabs should be open:
-	    """
+        """
             - data/hints/link_blank.html
             - data/hello.txt (active)
-	    """
+        """
 
     ## :debug-log-capacity
 
diff --git a/tests/end2end/features/yankpaste.feature b/tests/end2end/features/yankpaste.feature
index 718c72c68..e0b371c44 100644
--- a/tests/end2end/features/yankpaste.feature
+++ b/tests/end2end/features/yankpaste.feature
@@ -63,23 +63,23 @@ Feature: Yanking and pasting.
         Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title with spaces.html" should be shown
         And the clipboard should contain "http://localhost:(port)/data/title with spaces.html"
 
-	Scenario: Yanking URL that has = and & in its query string
-		When I open data/title.html?a=b&c=d
-		And I run :yank
-		Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a=b&c=d" should be shown
-		And the clipboard should contain "http://localhost:(port)/data/title.html?a=b&c=d"
+    Scenario: Yanking URL that has = and & in its query string
+        When I open data/title.html?a=b&c=d
+        And I run :yank
+        Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a=b&c=d" should be shown
+        And the clipboard should contain "http://localhost:(port)/data/title.html?a=b&c=d"
 
-	Scenario: Yanking URL that has = and ; in its query string
-		When I open data/title.html?a=b;c=d
-		And I run :yank
-		Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a=b;c=d" should be shown
-		And the clipboard should contain "http://localhost:(port)/data/title.html?a=b;c=d"
+    Scenario: Yanking URL that has = and ; in its query string
+        When I open data/title.html?a=b;c=d
+        And I run :yank
+        Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a=b;c=d" should be shown
+        And the clipboard should contain "http://localhost:(port)/data/title.html?a=b;c=d"
 
-	Scenario: Yanking URL with both & and ; in its query string
-		When I open data/title.html?a;b&c=d
-		And I run :yank
-		Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a;b&c=d" should be shown
-		And the clipboard should contain "http://localhost:(port)/data/title.html?a;b&c=d"
+    Scenario: Yanking URL with both & and ; in its query string
+        When I open data/title.html?a;b&c=d
+        And I run :yank
+        Then the message "Yanked URL to clipboard: http://localhost:(port)/data/title.html?a;b&c=d" should be shown
+        And the clipboard should contain "http://localhost:(port)/data/title.html?a;b&c=d"
 
     Scenario: Yanking with --quiet
         When I open data/title.html