diff --git a/src/Time.cpp b/src/Time.cpp
index deab3b4..69e15a6 100644
--- a/src/Time.cpp
+++ b/src/Time.cpp
@@ -12,7 +12,7 @@
 #define MEAN_AND_LEAN
 #include <windows.h>
 
-static int _hasPerformanceCounter;
+static bool _hasPerformanceCounter;
 static unsigned int _t0_32;
 static __int64 _t0_64;
 static double _resolution = 0.0;
@@ -26,13 +26,13 @@ static void _init() {
 	if( QueryPerformanceFrequency( (LARGE_INTEGER *)&freq ) )
 	{
 		// Performance counter is available => use it!
-		_hasPerformanceCounter = GL_TRUE;
+		_hasPerformanceCounter = true;
 
 		// Counter resolution is 1 / counter frequency
 		_resolution = 1.0 / (double)freq;
 
 		// Set start time for timer
-		QueryPerformanceCounter( (LARGE_INTEGER *)&__t0_64 );
+		QueryPerformanceCounter( (LARGE_INTEGER *)&_t0_64 );
 	}
 	else
 	{