diff --git a/du1/program.c b/du1/program.c
index 991842e..d6da2d3 100644
--- a/du1/program.c
+++ b/du1/program.c
@@ -14,6 +14,10 @@ int main()
             pocetRiadkov += 1;
             putchar(vstup);
         }
+        else if (vstup <= 32 || vstup == 127)
+        {
+            continue;
+        }
         else if (vstup == '\r')
         {
             continue;