diff --git a/GRRLIB/GRRLIB/GRRLIB.c b/GRRLIB/GRRLIB/GRRLIB.c
index 33ce79a..f497e03 100644
--- a/GRRLIB/GRRLIB/GRRLIB.c
+++ b/GRRLIB/GRRLIB/GRRLIB.c
@@ -288,6 +288,7 @@ void GRRLIB_InitTileSet(struct GRRLIB_texImg *tex, unsigned int tilew, unsigned
     if (tileh) // Avoid division by zero
         tex->nbtileh = tex->h / tileh;
     tex->tilestart = tilestart;
+    tex->tiledtex = true;
     GRRLIB_SetHandle( tex, 0, 0 );
 }