diff --git a/src/gallium/include/state_tracker/st_api.h b/src/gallium/include/state_tracker/st_api.h
index 06abfc56507..a2e37d2e488 100644
--- a/src/gallium/include/state_tracker/st_api.h
+++ b/src/gallium/include/state_tracker/st_api.h
@@ -213,7 +213,7 @@ struct st_egl_image
 struct st_visual
 {
    /**
-    * Available buffers.  Tested with ST_FRAMEBUFFER_*_MASK.
+    * Available buffers.  Bitfield of ST_ATTACHMENT_*_MASK bits.
     */
    unsigned buffer_mask;