diff --git a/du3/program.c b/du3/program.c
index f0b1a7a..d570003 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -25,9 +25,11 @@ int main() {
 			else {
 				date[counter2++] = (int) strtol(numbers, &ptr, 10);
 				if(counter2 == 1 && (date[0] < 1 || date[0] > 31)){
+					puts("Neplatny datum.");
 					goto LABEL;
 				}
 				else if(counter2 == 2 && (date[1] < 1 || date[1] > 12)){
+					puts("Neplatny datum.");
 					goto LABEL;
 				}
 				/*else if(counter2 == 2 && date[0] > 29){