diff --git a/src/widgets.zsh b/src/widgets.zsh
index 0dfb3f0..c6162b3 100644
--- a/src/widgets.zsh
+++ b/src/widgets.zsh
@@ -129,7 +129,7 @@ zle -N autosuggest-clear _zsh_autosuggest_widget_clear
 zle -N autosuggest-execute _zsh_autosuggest_widget_execute
 
 _zsh_autosuggest_show_suggestion() {
-	local suggestion=$1
+	local suggestion="$1"
 
 	_zsh_autosuggest_highlight_reset
 
diff --git a/zsh-autosuggestions.zsh b/zsh-autosuggestions.zsh
index 449e08d..246e96d 100644
--- a/zsh-autosuggestions.zsh
+++ b/zsh-autosuggestions.zsh
@@ -394,7 +394,7 @@ zle -N autosuggest-clear _zsh_autosuggest_widget_clear
 zle -N autosuggest-execute _zsh_autosuggest_widget_execute
 
 _zsh_autosuggest_show_suggestion() {
-	local suggestion=$1
+	local suggestion="$1"
 
 	_zsh_autosuggest_highlight_reset