diff --git a/du3/program.c b/du3/program.c
index 896966f..c9c83fc 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -37,7 +37,10 @@ int main() {
 					//goto LABEL;
 				}*/
 				else if (counter2 == 3){
-					if(date[2] <1) goto LABEL;
+					if(date[2] <1){ 
+						puts("Neplatny datum.");
+						goto LABEL;
+					}
 					date[0] += 7;
 					if(date[0] > 31 && (date[1] == 1 || date[1] == 3 || date[1] == 5 || date[1] == 7 || date[1] == 8 || date[1] == 10 || date[1] == 12)){
 						date[0] -= 31;