diff --git a/du3/program.c b/du3/program.c
index 182544c..f4994b2 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -140,7 +140,7 @@ int main()
             }
             else
             {
-                printf("OK");
+                printf("OK\n");
             }
         }
     }