diff --git a/cv3/program.c b/cv3/program.c
index f17c6c4..41ef5f3 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -57,6 +57,9 @@ bool nasobit(KalkulackaZasobnik *kalkulacka) {
 bool delit(KalkulackaZasobnik *kalkulacka) {
     float a, b;
     if (vyber(kalkulacka, &a, &b)) {
+        if (a == 0) {
+            return false; 
+        }
         return vloz(kalkulacka, b / a);
     }
     return false;
@@ -116,9 +119,9 @@ int main() {
                     break;
                 case '/':
                     if (!delit(&kalkulacka)) {
-                        if (a == 0) {
-                            printf ("division by zero\n");
-                             return 0; 
+                        if (delit==false){
+                            printf("divison by zero\n");
+                            return 0;
                         }
                         else{
                         printf("no input\n");