diff --git a/src/backend/catalog/namespace.c b/src/backend/catalog/namespace.c
index ed38350d7c..5f68cc1377 100644
--- a/src/backend/catalog/namespace.c
+++ b/src/backend/catalog/namespace.c
@@ -3233,8 +3233,8 @@ isTempNamespaceInUse(Oid namespaceId)
 
 	backendId = GetTempNamespaceBackendId(namespaceId);
 
-	if (backendId == InvalidBackendId ||
-		backendId == MyBackendId)
+	/* No such temporary namespace? */
+	if (backendId == InvalidBackendId)
 		return false;
 
 	/* Is the backend alive? */