diff --git a/src/r_data.c b/src/r_data.c
index db92c11fe..0e44ec8c7 100644
--- a/src/r_data.c
+++ b/src/r_data.c
@@ -1770,36 +1770,3 @@ void R_FlatTexture(size_t tex, UINT8 *flat)
 		}
 	}
 }
-
-void R_CropFlat(UINT8 *srcflat, UINT8 *destflat,
-				UINT16 srcwidth, UINT16 srcheight,
-				UINT16 resizewidth, UINT16 resizeheight,
-				UINT16 destwidth, UINT16 destheight)
-{
-	UINT16 y;
-	UINT16 position = 0;
-	for (y = 0; y < destheight; y++)
-	{
-		if (position > (srcwidth * srcheight))
-			break;
-		if (srcwidth != resizewidth)
-		{
-			if (resizewidth > srcwidth)
-			{
-				UINT8 *pos2 = srcflat+position;
-				UINT8 lastpixel = *(pos2-1);
-				M_Memcpy(destflat, srcflat+position, destwidth);
-				memset(pos2, lastpixel, resizewidth-srcwidth);
-			}
-			else
-				M_Memcpy(destflat, srcflat+position, resizewidth);
-		}
-		else
-			M_Memcpy(destflat, srcflat+position, destwidth);
-		destflat += destwidth;
-		position += srcwidth;
-	}
-
-	while (y++ < min(resizeheight, srcheight))
-		memset(destflat + (y * destwidth), *(destflat - 1), destwidth);
-}
diff --git a/src/r_data.h b/src/r_data.h
index c528fcfe1..9af621142 100644
--- a/src/r_data.h
+++ b/src/r_data.h
@@ -103,10 +103,6 @@ boolean R_CheckIfPatch(lumpnum_t lump);
 
 void R_FlatPatch(patch_t *patch, UINT8 *flat);
 void R_FlatTexture(size_t tex, UINT8 *flat);
-void R_CropFlat(UINT8 *srcflat, UINT8 *destflat,
-				UINT16 srcwidth, UINT16 srcheight,
-				UINT16 resizewidth, UINT16 resizeheight,
-				UINT16 destwidth, UINT16 destheight);
 
 extern INT32 numtextures;