diff --git a/src/DefinitionResolver.php b/src/DefinitionResolver.php
index ec295a53..f383e750 100644
--- a/src/DefinitionResolver.php
+++ b/src/DefinitionResolver.php
@@ -441,7 +441,7 @@ public function resolveExpressionNodeToType(Node\Expr $expr): Type
             }
             $fqn = (string)($expr->getAttribute('namespacedName') ?? $expr->name);
             $def = $this->index->getDefinition($fqn, true);
-            if ($def !== null) {
+            if ($def !== null && $def->type!= null) {
                 return $def->type;
             }
         }