diff --git a/du2/program.c b/du2/program.c
index 5636a8d..dffa963 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -25,7 +25,7 @@ int main() {
 	int max_number	= 0;
 	int max_position = 1;
 
-	for (int i = 0; fgets(glass[i], 20, stdin) != NULL; i++){
+	for (int i = 0; fgets(glass[i], 20, stdin); i++){
 		for (int j = 0; j < strlen(glass[i]); j++){
 			if (!isdigit(glass[i][j]) || atoi (glass[i]) < 1){
 				goto LABEL;