diff --git a/src/gallium/drivers/iris/iris_bufmgr.c b/src/gallium/drivers/iris/iris_bufmgr.c
index a403c8d0119..605326dceaf 100644
--- a/src/gallium/drivers/iris/iris_bufmgr.c
+++ b/src/gallium/drivers/iris/iris_bufmgr.c
@@ -1224,8 +1224,7 @@ void *
 iris_bo_map(struct pipe_debug_callback *dbg,
             struct iris_bo *bo, unsigned flags)
 {
-   if (bo->tiling_mode != I915_TILING_NONE && !(flags & MAP_RAW))
-      return iris_bo_map_gtt(dbg, bo, flags);
+   assert((flags & MAP_RAW) || bo->tiling_mode == I915_TILING_NONE);
 
    void *map;