diff --git a/highlighters/main/test-data/opt-shwordsplit1.zsh b/highlighters/main/test-data/opt-shwordsplit1.zsh
index 0b5bd60..7455785 100644
--- a/highlighters/main/test-data/opt-shwordsplit1.zsh
+++ b/highlighters/main/test-data/opt-shwordsplit1.zsh
@@ -29,7 +29,7 @@
 # -------------------------------------------------------------------------------------------------
 
 setopt shwordsplit
-EDITOR='ed -s'
+local EDITOR='ed -s'
 
 ed() { command ed "$@" }