diff --git a/du3/program.c b/du3/program.c
index fac1483..55f76a9 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -71,7 +71,7 @@ int main() {
 		
 	}
 	LABEL:
-	if(truth) puts("Neplatny datum");
+	if(truth) puts("Neplatny datum.");
 	free(input);
 	return 0;
 }
\ No newline at end of file