diff --git a/du2/program.c b/du2/program.c
index 2634aa1..d24e57e 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -11,7 +11,7 @@ while(i<VELKOST_POLA){
     value=0;
     int r = scanf("%d",&value);
     pole[i]=r;
-    if(r!=-1){
+    if(r >= 0 && r <= 9999){
         i++;
         printf("Súťažiaci č. %d vypil %d pohárov.\n", i,r);