diff --git a/source/build/src/defs.cpp b/source/build/src/defs.cpp
index ab94457b0..55f382431 100644
--- a/source/build/src/defs.cpp
+++ b/source/build/src/defs.cpp
@@ -611,41 +611,13 @@ static int32_t defsparser(scriptfile *script)
         }
         break;
         case T_SETUPTILE:
-        {
-            int tile, tmp;
-
-            if (scriptfile_getsymbol(script,&tile)) break;
-            if (check_tile("setuptile", tile, script, pos))
-                break;
-            auto& tiled = TileFiles.tiledata[tile];
-            if (scriptfile_getsymbol(script,&tiled.hiofs.xsize)) break;  // XXX
-            if (scriptfile_getsymbol(script, &tiled.hiofs.ysize)) break;
-            if (scriptfile_getsymbol(script, &tiled.hiofs.xoffs)) break;
-            if (scriptfile_getsymbol(script, &tiled.hiofs.yoffs)) break;
+            parseSetupTile(*script, pos);
             break;
-        }
+
         case T_SETUPTILERANGE:
-        {
-            int tile1,tile2;
-            TileOffs t;
-
-            if (scriptfile_getsymbol(script,&tile1)) break;
-            if (scriptfile_getsymbol(script,&tile2)) break;
-            if (scriptfile_getnumber(script,&t.xsize)) break;
-            if (scriptfile_getnumber(script,&t.ysize)) break;
-            if (scriptfile_getsymbol(script,&t.xoffs)) break;
-            if (scriptfile_getsymbol(script,&t.yoffs)) break;
-
-            if (check_tile_range("setuptilerange", &tile1, &tile2, script, pos))
-                break;
-
-            for (int i=tile1; i<=tile2; i++)
-            {
-                TileFiles.tiledata[i].hiofs = t;
-            }
-
+            parseSetupTileRange(*script, pos);
             break;
-        }
+
         case T_ANIMTILERANGE:
             parseAnimTileRange(*script, pos);
             break;
diff --git a/source/core/parsefuncs.h b/source/core/parsefuncs.h
index 05b3aa87b..498f3cdb7 100644
--- a/source/core/parsefuncs.h
+++ b/source/core/parsefuncs.h
@@ -35,6 +35,33 @@
 **
 */
 
+void parseSetupTile(FScanner& sc, FScriptPosition& pos)
+{
+	int tile;
+	if (!sc.GetNumber(tile, true)) return;
+	if (!ValidateTilenum("setuptile", tile, pos)) return;
+	auto& tiled = TileFiles.tiledata[tile];
+	if (!sc.GetNumber(tiled.hiofs.xsize, true)) return;
+	if (!sc.GetNumber(tiled.hiofs.ysize, true)) return;
+	if (!sc.GetNumber(tiled.hiofs.xoffs, true)) return;
+	if (!sc.GetNumber(tiled.hiofs.yoffs, true)) return;
+}
+
+void parseSetupTileRange(FScanner& sc, FScriptPosition& pos)
+{
+	int tilestart, tileend;
+	if (!sc.GetNumber(tilestart, true)) return;
+	if (!sc.GetNumber(tileend, true)) return;
+	if (!ValidateTileRange("setuptilerange", tilestart, tileend, pos)) return;
+
+	TileOffs hiofs;
+	if (!sc.GetNumber(hiofs.xsize, true)) return;
+	if (!sc.GetNumber(hiofs.ysize, true)) return;
+	if (!sc.GetNumber(hiofs.xoffs, true)) return;
+	if (!sc.GetNumber(hiofs.yoffs, true)) return;
+
+	for (int i = tilestart; i <= tileend; i++) TileFiles.tiledata[i].hiofs = hiofs;
+}
 
 void parseAnimTileRange(FScanner& sc, FScriptPosition& pos)
 {