diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index 68226533b33..4028a685260 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -208,7 +208,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
       return 64; // XXX: ?
    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
-      return 1;
+      return 16;
    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
       return true; // XXX: ?????
    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE: