diff --git a/qutebrowser/utils/version.py b/qutebrowser/utils/version.py
index e9cea7866..37bfe0dc4 100644
--- a/qutebrowser/utils/version.py
+++ b/qutebrowser/utils/version.py
@@ -487,7 +487,7 @@ def _pdfjs_version() -> str:
     else:
         pdfjs_file = pdfjs_file.decode('utf-8')
         version_re = re.compile(
-            r"""^ *(PDFJS\.version|(var|const) pdfjsVersion) = ['"](?P<version>[^'"]+)['"];$""",
+            r"""^ *(PDFJS\.version|(var|const|\*) pdfjsVersion) = ['"]?(?P<version>[^'"\n]+)['"]?;?$""",
             re.MULTILINE)
 
         match = version_re.search(pdfjs_file)