diff --git a/src/swrenderer/scene/r_plane.cpp b/src/swrenderer/scene/r_plane.cpp
index 8442532ce..cbfd85a92 100644
--- a/src/swrenderer/scene/r_plane.cpp
+++ b/src/swrenderer/scene/r_plane.cpp
@@ -80,13 +80,8 @@ namespace swrenderer
 {
 	using namespace drawerargs;
 
-extern int wallshade;
-
 extern subsector_t *InSubsector;
 
-planefunction_t 		floorfunc;
-planefunction_t 		ceilingfunc;
-
 visplane_t 				*floorplane;
 visplane_t 				*ceilingplane;
 
diff --git a/src/swrenderer/scene/r_plane.h b/src/swrenderer/scene/r_plane.h
index e38d16af8..09f039e55 100644
--- a/src/swrenderer/scene/r_plane.h
+++ b/src/swrenderer/scene/r_plane.h
@@ -28,11 +28,6 @@
 namespace swrenderer
 {
 
-typedef void (*planefunction_t) (int top, int bottom);
-
-extern planefunction_t	floorfunc;
-extern planefunction_t	ceilingfunc_t;
-
 extern short			floorclip[MAXWIDTH];
 extern short			ceilingclip[MAXWIDTH];