diff --git a/src/r_plane.cpp b/src/r_plane.cpp
index 8cab34230..96a77930a 100644
--- a/src/r_plane.cpp
+++ b/src/r_plane.cpp
@@ -1280,6 +1280,7 @@ void R_DrawSkyBoxes ()
 		ds_p->sprtopclip = R_NewOpening (pl->maxx - pl->minx + 1);
 		ds_p->maskedtexturecol = ds_p->swall = -1;
 		ds_p->bFogBoundary = false;
+		ds_p->fake = 0;
 		memcpy (openings + ds_p->sprbottomclip, floorclip + pl->minx, (pl->maxx - pl->minx + 1)*sizeof(short));
 		memcpy (openings + ds_p->sprtopclip, ceilingclip + pl->minx, (pl->maxx - pl->minx + 1)*sizeof(short));