diff --git a/vendor/readme-parser.php b/vendor/readme-parser.php
index d89a06e..00a53bb 100644
--- a/vendor/readme-parser.php
+++ b/vendor/readme-parser.php
@@ -157,8 +157,11 @@ class PucReadmeParser {
 		$upgrade_notice = array();
 		if ( isset($final_sections['upgrade_notice']) ) {
 			$split = preg_split( '#<h4>(.*?)</h4>#', $final_sections['upgrade_notice'], -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
-			for ( $i = 0; $i < count( $split ); $i += 2 )
-				$upgrade_notice[$this->sanitize_text( $split[$i] )] = substr( $this->sanitize_text( $split[$i + 1] ), 0, 300 );
+			if ( count($split) >= 2 ) {
+				for ( $i = 0; $i < count( $split ); $i += 2 ) {
+					$upgrade_notice[$this->sanitize_text( $split[$i] )] = substr( $this->sanitize_text( $split[$i + 1] ), 0, 300 );
+				}
+			}
 			unset( $final_sections['upgrade_notice'] );
 		}