diff --git a/VistaCoreLibs/VistaKernel/Stuff/VistaFrameSeriesCapture.cpp b/VistaCoreLibs/VistaKernel/Stuff/VistaFrameSeriesCapture.cpp
index d60c6aaaf45ed7ad482912f5556d1bce5bb83c0d..27790817918d5506b3b8dee6120355245545b7d8 100644
--- a/VistaCoreLibs/VistaKernel/Stuff/VistaFrameSeriesCapture.cpp
+++ b/VistaCoreLibs/VistaKernel/Stuff/VistaFrameSeriesCapture.cpp
@@ -91,7 +91,7 @@ VistaFrameSeriesCapture::~VistaFrameSeriesCapture()
 
 bool VistaFrameSeriesCapture::InitCaptureEveryFrame( const std::string& sLocation, const std::string& sFilenamePattern )
 {
-	if( m_pWindow == false )
+	if( m_pWindow == NULL )
 		return false;
 
 	VistaType::microtime nTime = m_pSystem->GetFrameClock();
@@ -126,7 +126,7 @@ bool VistaFrameSeriesCapture::InitCaptureEveryFrame( const std::string& sLocatio
 
 bool VistaFrameSeriesCapture::InitCaptureEveryNthFrame( const std::string& sLocation, const std::string& sFilenamePattern, const int nFrame )
 {
-	if( m_pWindow == false )
+	if( m_pWindow == NULL )
 		return false;
 
 	VistaType::microtime nTime = m_pSystem->GetFrameClock();
@@ -162,7 +162,7 @@ bool VistaFrameSeriesCapture::InitCaptureEveryNthFrame( const std::string& sLoca
 
 bool VistaFrameSeriesCapture::InitCapturePeriodically( const std::string& sLocation, const std::string& sFilenamePattern, const VistaType::microtime nPeriod )
 {
-	if( m_pWindow == false )
+	if( m_pWindow == NULL )
 		return false;
 
 	VistaType::microtime nTime = m_pSystem->GetFrameClock();
@@ -198,7 +198,7 @@ bool VistaFrameSeriesCapture::InitCapturePeriodically( const std::string& sLocat
 
 bool VistaFrameSeriesCapture::InitCaptureWithFramerate( const std::string& sLocation, const std::string& sFilenamePattern, const float nFramerate )
 {
-	if( m_pWindow == false )
+	if( m_pWindow == NULL )
 		return false;
 
 	VistaType::microtime nTime = m_pSystem->GetFrameClock();