diff --git a/Lab51.cpp b/Lab51.cpp
index 2321314..fa73f67 100644
--- a/Lab51.cpp
+++ b/Lab51.cpp
@@ -2,7 +2,7 @@
 //
 
 #include "framework.h"
-#include "Lab51.h"
+#include "Lab521.h"
 
 #define MAX_LOADSTRING 100