diff --git a/source/blender/render/intern/source/rendercore.c b/source/blender/render/intern/source/rendercore.c
index ed9b98c2ada..9fd0c247aaf 100644
--- a/source/blender/render/intern/source/rendercore.c
+++ b/source/blender/render/intern/source/rendercore.c
@@ -1447,6 +1447,8 @@ void zbufshade_sss_tile(RenderPart *pa)
 	rl= rr->layers.first;
 	ssamp.shi[0].passflag |= SCE_PASS_RGBA|SCE_PASS_COMBINED;
 	ssamp.shi[0].combinedflag &= ~(SCE_PASS_SPEC);
+	ssamp.shi[0].mat_override= NULL;
+	ssamp.shi[0].light_override= NULL;
 	lay= ssamp.shi[0].lay;
 
 	/* create the pixelstrs to be used later */