diff --git a/du3/program.c b/du3/program.c
index 9e204bc..868e058 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -37,7 +37,7 @@ int main() {
 					//goto LABEL;
 				}*/
 				else if (counter2 == 3){
-					if(date[2] < 1900 && date[2] > 2100){ 
+					if(date[2] < 1900 || date[2] > 2100){ 
 						puts("Neplatny datum.");
 						goto LABEL;
 					}