diff --git a/server/src/tools/semantic_tokens.py b/server/src/tools/semantic_tokens.py
index b2f762e..80d4197 100644
--- a/server/src/tools/semantic_tokens.py
+++ b/server/src/tools/semantic_tokens.py
@@ -172,7 +172,7 @@ class _Highlighter(Visitor):
                                 )
         if routine.contents == "namespace" and command.args:
             first_arg = command.args[1]
-            if hasattr(first_arg, "pos") and hasattr(first_arg, "value"):
+            if hasattr(first_arg, "pos") and first_arg.value is not None:
                 line, col = first_arg.pos
                 self._tokens.append(
                     (((line - 1, col - 1), len(first_arg.value), "class", []))