diff --git a/src/Analyser/MutatingScope.php b/src/Analyser/MutatingScope.php
index 900c3f3fff1..a3ae4697891 100644
--- a/src/Analyser/MutatingScope.php
+++ b/src/Analyser/MutatingScope.php
@@ -4105,9 +4105,7 @@ private function createConditionalExpressions(
 			if (!$holder->getCertainty()->yes()) {
 				continue;
 			}
-			if ($mergedExpressionTypes[$exprString]->equalTypes($holder)) {
-				continue;
-			}
+
 			if (
 				array_key_exists($exprString, $theirExpressionTypes)
 				&& !$theirExpressionTypes[$exprString]->getCertainty()->yes()
@@ -4115,6 +4113,10 @@ private function createConditionalExpressions(
 				continue;
 			}
 
+			if ($mergedExpressionTypes[$exprString]->equalTypes($holder)) {
+				continue;
+			}
+
 			$typeGuards[$exprString] = $holder;
 		}