diff --git a/git-prompt.c b/git-prompt.c
index e63d871..a3944f1 100644
--- a/git-prompt.c
+++ b/git-prompt.c
@@ -70,9 +70,8 @@ char* trim(char* str) {
 
 char* append(char* buffer, int count, ...) {
   va_list list;
-  int i;
   va_start(list, count);
-  for (i = 0; i < count; i++) {
+  for (int i = 0; i < count; i++) {
     strcat(buffer, va_arg(list, char*));
   }
   va_end(list);