diff --git a/indra/llwindow/llwindowsdl.cpp b/indra/llwindow/llwindowsdl.cpp
index 5ed6094f4a2b67a105cb1415d16c62a111f39b8a..3e39ecfa2e4bfdb8ec824c07578513e33426c025 100644
--- a/indra/llwindow/llwindowsdl.cpp
+++ b/indra/llwindow/llwindowsdl.cpp
@@ -759,6 +759,9 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
 #if LL_X11
 	init_x11clipboard();
 #endif // LL_X11
+
+	//make sure multisampling is disabled by default
+	glDisable(GL_MULTISAMPLE_ARB);
 	
 	// We need to do this here, once video is init'd
 	if (-1 == SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY,