diff --git a/du2/program.c b/du2/program.c
index c046365..2b7fa8c 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -9,14 +9,13 @@ int main(){
      if (scanf("%lf",&a) != 1) {
         printf("Nepodarilo sa nacitat zaklad x\n");
         return 0;
-         }else{ while (scanf("%lf", &koef) == 1 ) {
-           if(koef ==""){
-printf("Vysledok je: %.2f\n", rishennia);
-return 0;
-           } 
+         }else{ while (scanf("%lf", &koef) == 1 ) { 
+          if(koef == NULL){
+            printf("Vysledok je: %.2f\n", rishennia);
+            return 0;
+          }
         rishennia=rishennia*a +koef;
-        i++;
-           
+        i++;      
             }
            if (feof(stdin)) {
                   printf("Vysledok je: %.2f\n", rishennia);