diff --git a/bitcmp/bitcmp.c b/bitcmp/bitcmp.c
index 2ed76d4..d4d707e 100644
--- a/bitcmp/bitcmp.c
+++ b/bitcmp/bitcmp.c
@@ -91,7 +91,7 @@ int main(int argc, char *const *argv)
 		len = got1 < got2 ? got1 : got2;
 		if (!len)
 			break;
-		for (i = 0; i <= len; i += bytes) {
+		for (i = 0; i < len; i += bytes) {
 			diff = 0;
 			switch (bytes) {
 			case 4: