diff --git a/highlighters/main/test-data/alias-parameter.zsh b/highlighters/main/test-data/alias-parameter.zsh
index 6119c3d..21bc6b3 100644
--- a/highlighters/main/test-data/alias-parameter.zsh
+++ b/highlighters/main/test-data/alias-parameter.zsh
@@ -29,7 +29,7 @@
 # -------------------------------------------------------------------------------------------------
 
 alias '$foo'='echo alias'
-foo=(echo param)
+local foo; foo=(echo param)
 
 BUFFER='$foo'