diff --git a/src/r_bsp.h b/src/r_bsp.h
index 97b8c2e8..e871b5dd 100644
--- a/src/r_bsp.h
+++ b/src/r_bsp.h
@@ -33,8 +33,6 @@ extern drawseg_t *drawsegs;
 extern drawseg_t *ds_p;
 extern INT32 doorclosed;
 
-typedef void (*drawfunc_t)(INT32 start, INT32 stop);
-
 // BSP?
 void R_ClearClipSegs(void);
 void R_PortalClearClipSegs(INT32 start, INT32 end);
diff --git a/src/r_plane.h b/src/r_plane.h
index 64b339d0..8730bcef 100644
--- a/src/r_plane.h
+++ b/src/r_plane.h
@@ -73,7 +73,6 @@ extern visplane_t *ceilingplane;
 // Visplane related.
 extern INT16 *lastopening, *openings;
 extern size_t maxopenings;
-typedef void (*planefunction_t)(INT32 top, INT32 bottom);
 
 extern INT16 floorclip[MAXVIDWIDTH], ceilingclip[MAXVIDWIDTH];
 extern fixed_t frontscale[MAXVIDWIDTH], yslopetab[MAXVIDHEIGHT*4];
diff --git a/src/r_segs.c b/src/r_segs.c
index 9faee429..11b4c8ae 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -2480,7 +2480,7 @@ void R_StoreWallRange(INT32 start, INT32 stop)
 				ds_p->maskedtexturecol = ds_p->thicksidecol;
 
 #ifdef ESLOPE
-			maskedtextureheight = &(ds_p->maskedtextureheight[0]); // ????
+			maskedtextureheight = ds_p->maskedtextureheight; // note to red, this == &(ds_p->maskedtextureheight[0])
 
 			// Set midtexture starting height
 			if (linedef->flags & ML_EFFECT2) { // Ignore slopes when texturing