diff --git a/CMakeLists.txt b/CMakeLists.txt
index ab064c6..aa72b3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@
 
 cmake_minimum_required (VERSION 3.21)
 
-set(EFXC2_VERSION 0.0.11.235)
+set(EFXC2_VERSION 0.0.11.236)
 project (efxc2 VERSION ${EFXC2_VERSION}
   DESCRIPTION "Enhanced fxc2"
   HOMEPAGE_URL "https://github.com/JPeterMugaas/efxc2"
diff --git a/efxc2Console.h b/efxc2Console.h
index 2abb1ed..48e3027 100644
--- a/efxc2Console.h
+++ b/efxc2Console.h
@@ -9,6 +9,8 @@
 //--------------------------------------------------------------------------------------
 
 #pragma once
+#ifndef EFXC2CONSOLE_H_INCLUDED
+#define EFXC2CONSOLE_H_INCLUDED
 #include "efxc2.h"
 
 namespace efxc2Console {
@@ -35,7 +37,7 @@ namespace efxc2Console {
         }
         
 #ifdef _WIN32
-        void Shutdown() {
+        void Shutdown() const {
             (void)SetConsoleMode(std_output, stdout_orig_console_mode);
             (void)SetConsoleMode(std_error, stderr_orig_console_mode);
 #else
@@ -94,4 +96,5 @@ namespace efxc2Console {
         }
     };
      const Console console;
-}
\ No newline at end of file
+}
+#endif
diff --git a/efxc2Exception.h b/efxc2Exception.h
index 42c90bf..c1c651e 100644
--- a/efxc2Exception.h
+++ b/efxc2Exception.h
@@ -9,6 +9,9 @@
 //--------------------------------------------------------------------------------------
 
 #pragma once
+
+#ifndef EFXC2EXCEPTION_H_INCLUDED
+#define EFXC2EXCEPTION_H_INCLUDED
 #include "efxc2.h"
 
 namespace efxc2Exception {
@@ -27,4 +30,5 @@ namespace efxc2Exception {
 	class NoInputFile : public ProgramExceptionBase {};
 	class CompileError : public ProgramExceptionBase {};
 	class PreprocessError : public ProgramExceptionBase {};
-}
\ No newline at end of file
+}
+#endif
diff --git a/efxc2Utils.cpp b/efxc2Utils.cpp
index e555166..4266fdb 100644
--- a/efxc2Utils.cpp
+++ b/efxc2Utils.cpp
@@ -180,7 +180,6 @@ bool efxc2Utils::readAll(_In_ std::ifstream& in,
 	_Out_ efxc2Utils::M_BUFFER& dataptr) {
 	dataptr = std::make_shared<std::vector<char>>();
 	auto temp = std::make_unique<std::vector<char>>();
-	size_t used = 0;
 	size_t n = 0;
 	bool result = false;
 	if (dataptr != nullptr) {
@@ -191,7 +190,6 @@ bool efxc2Utils::readAll(_In_ std::ifstream& in,
 			if (n == 0) {
 				break;
 			}
-			used += n;
 			temp->resize(n);
 			(void)dataptr->insert(dataptr->end(), temp->begin(), temp->end());
 		}