diff --git a/du2/program.c b/du2/program.c
index bea8df6..93309de 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -12,7 +12,7 @@ int main(){
     scanf("%d",&drinks_counter[i]);  
     if(drinks_counter[i]<1){
       if(i<1){
-      printf("Málo platných hodnôt.");
+      printf("Chyba: Málo platných hodnôt.");
       }
       break;
     }