diff --git a/extractor/extract.php b/extractor/extract.php
index 6732187a..9e82073a 100755
--- a/extractor/extract.php
+++ b/extractor/extract.php
@@ -556,7 +556,7 @@ private function compareFunctions(Node\FunctionLike $old, Node\FunctionLike $new
 		if (count($oldAttribGroups) !== count($newAttribGroups)) {
 			return $this->stmtDiff($old, $new, $updateTo);
 		}
-		foreach ($oldAttribGroups as $groupN => $oldGroups) {
+		foreach ($oldAttribGroups as $groupN => $oldGroup) {
 			$oldAttribs = $oldGroup->attrs;
 			$newAttribs = $newAttribGroups[$groupN]->attrs;
 			if (count($oldAttribs) !== count($newAttribs)) {