diff --git a/lab11/Report/Report.pdf b/lab11/Report/Report.pdf
index 17734cf..40e9435 100755
Binary files a/lab11/Report/Report.pdf and b/lab11/Report/Report.pdf differ
diff --git a/lab11/prj/ModulesMykhailenko.h b/lab11/prj/ModulesMykhailenko.h
index 1d4c466..729314f 100755
--- a/lab11/prj/ModulesMykhailenko.h
+++ b/lab11/prj/ModulesMykhailenko.h
@@ -1,4 +1,7 @@
-#include <vector>
+#ifndef MODULESMYKHAILENKO_H_INCLUDED
+#define MODULESMYKHAILENKO_H_INCLUDED
+
+#include <vector>
 #include "struct_type_project_1.h"
 
 using namespace std;
@@ -12,3 +15,5 @@ bool read(vector<Product>&, string);
 bool save(vector<Product>&, string);
 
 void search(vector<Product>&, wstring);
+
+#endif // MODULESMYKHAILENKO_H_INCLUDED