diff --git a/git-prompt-help.sh b/git-prompt-help.sh
index 0ae3e60..5bb8255 100755
--- a/git-prompt-help.sh
+++ b/git-prompt-help.sh
@@ -65,6 +65,7 @@ git_prompt_color_samples() {
     echo -e "${color}$1${ResetColor}" | sed 's/\\\]//g'  | sed 's/\\\[//g'
   }
 
+  local x
   while (( x < 8 )) ; do
     showColor ${ColorNames[x]}
     showColor "Dim${ColorNames[x]}"