diff --git a/grammar/src/expressions.grm b/grammar/src/expressions.grm
index 8eb798a6840..5ce838a40c7 100644
--- a/grammar/src/expressions.grm
+++ b/grammar/src/expressions.grm
@@ -92,7 +92,7 @@ atomicExpression
   : jump
   : loop
   : SimpleName
-  : "namespace" // foo the root namespace
+  : "namespace" // for the root namespace
   ;
 
 literalConstant