diff --git a/du3/program.c b/du3/program.c
index ac6d06f..0cad1d9 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -53,7 +53,7 @@ int main() {
         if (fabs(result2 - result) < cislo123) {
             printf("OK\n");
         } else {
-            printf("Zle\n");
+            printf("ZLE\n");
         }
     
     return 0;