diff --git a/src/newgrf_callbacks.h b/src/newgrf_callbacks.h
--- a/src/newgrf_callbacks.h
+++ b/src/newgrf_callbacks.h
@@ -124,7 +124,7 @@ enum CallbackID {
 	CBID_INDTILE_SHAPE_CHECK        = 0x2F, // not yet implemented
 
 	/* Called to determine the type (if any) of foundation to draw for industry tile */
-	CBID_INDUSTRY_DRAW_FOUNDATIONS  = 0x30, // not yet implemented
+	CBID_INDUSTRY_DRAW_FOUNDATIONS  = 0x30,
 
 	/* Called when the player (or AI) tries to start or stop a vehicle. Mainly
 	 * used for preventing a vehicle from leaving the depot. */
diff --git a/src/newgrf_industrytiles.cpp b/src/newgrf_industrytiles.cpp
--- a/src/newgrf_industrytiles.cpp
+++ b/src/newgrf_industrytiles.cpp
@@ -207,7 +207,7 @@ bool DrawNewIndustryTile(TileInfo *ti, I
 		if (HASBIT(inds->callback_flags, CBM_INDT_DRAW_FOUNDATIONS)) {
 			/* Called to determine the type (if any) of foundation to draw for industry tile */
 			uint32 callback_res = GetIndustryTileCallback(CBID_INDUSTRY_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
-			draw_old_one = callback_res == 0 || callback_res == CALLBACK_FAILED;
+			draw_old_one = callback_res != 0;
 		}
 
 		if (draw_old_one) DrawFoundation(ti, ti->tileh);