1 files changed, 6 insertions, 5 deletions

diff --git a/split.c b/split.c
index 81671a7..a3d0e77 100644
--- a/split.c
+++ b/split.c
@@ -39,13 +39,14 @@ static char *nextsuffix(size_t n, char s[])
 		return s;
 	}
 
-	for (size_t i = n - 1; ; i--) {
-		s[i] = *(strchr(alphabet, s[i]) + 1);
-		if (s[i] == '\0') {
-			if (i == 0) {
+	n--;
+	for (;;) {
+		s[n] = *(strchr(alphabet, s[n]) + 1);
+		if (s[n] == '\0') {
+			if (n == 0) {
 				return NULL;
 			}
-			s[i] = alphabet[0];
+			s[n--] = alphabet[0];
 		} else {
 			break;
 		}