diff -r c8862e1bc41f src/video/windows/SDL_windowsopengl.c
--- a/src/video/windows/SDL_windowsopengl.c	Fri Jul 22 00:12:03 2011 -0700
+++ b/src/video/windows/SDL_windowsopengl.c	Mon Jul 25 17:57:35 2011 +0200
@@ -466,9 +466,11 @@
         *iAttr++ = _this->gl_config.multisamplesamples;
     }
 
-    *iAttr++ = WGL_ACCELERATION_ARB;
-    *iAttr++ = (_this->gl_config.accelerated ? WGL_FULL_ACCELERATION_ARB :
-                                               WGL_NO_ACCELERATION_ARB);
+    if ( this->gl_config.accelerated >= 0 ) {
+        *iAttr++ = WGL_ACCELERATION_ARB;
+        *iAttr++ = (_this->gl_config.accelerated ? WGL_FULL_ACCELERATION_ARB :
+                                                   WGL_NO_ACCELERATION_ARB);
+    }
 
     *iAttr = 0;