diff --git a/quakespasm/Quake/gl_warp.c b/quakespasm/Quake/gl_warp.c
index 17a7ee3e..9c73b02f 100644
--- a/quakespasm/Quake/gl_warp.c
+++ b/quakespasm/Quake/gl_warp.c
@@ -260,6 +260,9 @@ void R_UpdateWarpTextures (void)
 		tx->update_warp = false;
 	}
 
+	// ericw -- workaround for osx 10.6 driver bug when using FSAA. R_Clear only clears the warpimage part of the screen.
+	GL_SetCanvas(CANVAS_DEFAULT);
+
 	//if warp render went down into sbar territory, we need to be sure to refresh it next frame
 	if (gl_warpimagesize + sb_lines > glheight)
 		Sbar_Changed ();