diff --git a/src/js/static-filtering-parser.js b/src/js/static-filtering-parser.js
index 15c7a581c..28a6033b9 100644
--- a/src/js/static-filtering-parser.js
+++ b/src/js/static-filtering-parser.js
@@ -1126,8 +1126,9 @@ export class AstFilterParser {
         if ( tail !== 0 ) {
             this.linkRight(prev, tail);
         }
-        if ( this.astType !== AST_TYPE_NETWORK ) { return 0; }
-        this.validateNet();
+        if ( this.astType === AST_TYPE_NETWORK ) {
+            this.validateNet();
+        }
         return this.throwHeadNode(head);
     }