diff --git a/src/QueryReflection/QueryReflection.php b/src/QueryReflection/QueryReflection.php
index c4e0f5e1..02c64800 100644
--- a/src/QueryReflection/QueryReflection.php
+++ b/src/QueryReflection/QueryReflection.php
@@ -366,6 +366,10 @@ private function resolveQueryStringExpr(Expr $queryExpr, Scope $scope, bool $res
             $leftString = $this->resolveQueryStringExpr($left, $scope);
             $rightString = $this->resolveQueryStringExpr($right, $scope);
 
+            if (null === $leftString || null === $rightString) {
+                return null;
+            }
+
             // queries with a dynamic FROM are not resolvable
             if (QueryReflection::getRuntimeConfiguration()->isDebugEnabled()) {
                 if (str_ends_with(rtrim($leftString), 'FROM') && is_numeric(trim($rightString, '"\''))) {
@@ -373,10 +377,6 @@ private function resolveQueryStringExpr(Expr $queryExpr, Scope $scope, bool $res
                 }
             }
 
-            if (null === $leftString || null === $rightString) {
-                return null;
-            }
-
             return $leftString . $rightString;
         }