diff --git a/core/dispframe.cpp b/core/dispframe.cpp
index 439993bd8..b711b1ff1 100755
--- a/core/dispframe.cpp
+++ b/core/dispframe.cpp
@@ -29,8 +29,12 @@ void dc_run()
 
 	double t0 = os_GetSeconds();
 	TA_context*ctx = read_frame(frame_path);
+	ctx->rend.fog_clamp_min = FOG_CLAMP_MIN;
+	ctx->rend.fog_clamp_max = FOG_CLAMP_MAX;
 	double t1 = os_GetSeconds();
-	printf("Loaded context in %g ms\n", (t1- t0) * 1000);
+	fog_needs_update = true;
+	pal_needs_update = true;
+	printf("Loaded context in %g ms\n", (t1 - t0) * 1000);
 
 	while(renderer_enabled)
 	{