diff --git a/abaplint.jsonc b/abaplint.jsonc
index d3a6768..6dbfe0a 100644
--- a/abaplint.jsonc
+++ b/abaplint.jsonc
@@ -19,7 +19,7 @@
   ],
   "syntax": {
     "version": "v750",
-    "errorNamespace": "."
+    "errorNamespace": "^(Z|Y|LCL_|TY_|LIF_)"
   },
   "rules": {
     "downport": true,