diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 6722248c23b018bcef3211f3fddc70fa763b0da7..551d487cc8727ad1399d64db2632a357635bc006 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -500,7 +500,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 	//-----------------------------------------------------------------------
 
 	DEVMODE dev_mode;
-	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
+	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
 	dev_mode.dmSize = sizeof(DEVMODE);
 	DWORD current_refresh;
 	if (EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dev_mode))
@@ -880,7 +880,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen &size, BO
 {
 	GLuint	pixel_format;
 	DEVMODE dev_mode;
-	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
+	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
 	dev_mode.dmSize = sizeof(DEVMODE);
 	DWORD	current_refresh;
 	DWORD	dw_ex_style;
@@ -2715,7 +2715,7 @@ LLWindow::LLWindowResolution* LLWindowWin32::getSupportedResolutions(S32 &num_re
 	{
 		mSupportedResolutions = new LLWindowResolution[MAX_NUM_RESOLUTIONS];
 		DEVMODE dev_mode;
-		::ZeroMemory(&dev_mode, sizeof(DEVMODE));
+		::ZeroMemory(&dev_mode, sizeof(DEVMODE));
 		dev_mode.dmSize = sizeof(DEVMODE);
 
 		mNumSupportedResolutions = 0;
@@ -2792,7 +2792,7 @@ F32 LLWindowWin32::getPixelAspectRatio()
 BOOL LLWindowWin32::setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh)
 {
 	DEVMODE dev_mode;
-	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
+	::ZeroMemory(&dev_mode, sizeof(DEVMODE));
 	dev_mode.dmSize = sizeof(DEVMODE);
 	BOOL success = FALSE;