diff --git a/src/Compiler.php b/src/Compiler.php
index 96e71692..7e93fcb0 100644
--- a/src/Compiler.php
+++ b/src/Compiler.php
@@ -3621,7 +3621,7 @@ private function coerceValue($value)
         }
 
         if ($value === null) {
-            $value = self::$null;
+            return self::$null;
         }
 
         if (is_numeric($value)) {