diff --git a/pretty.c b/pretty.c
index b4e32b74d3..962e82be86 100644
--- a/pretty.c
+++ b/pretty.c
@@ -497,7 +497,7 @@ void pp_user_info(struct pretty_print_context *pp,
 static int is_empty_line(const char *line, int *len_p)
 {
 	int len = *len_p;
-	while (len && isspace(line[len-1]))
+	while (len && isspace(line[len - 1]))
 		len--;
 	*len_p = len;
 	return !len;