diff --git a/video/img_format.h b/video/img_format.h
index f422019dec..8e55cc9493 100644
--- a/video/img_format.h
+++ b/video/img_format.h
@@ -98,7 +98,7 @@ enum mp_component_type mp_imgfmt_get_component_type(int imgfmt);
 
 struct mp_regular_imgfmt_plane {
     uint8_t num_components;
-    // 1 is luminance/red/gray, 2 is green/Cb, 3 is blue/Cr, 4 is alpha.
+    // 1 is red/luminance/gray, 2 is green/Cb, 3 is blue/Cr, 4 is alpha.
     // 0 is used for padding (undefined contents).
     // It is guaranteed that non-0 values occur only once in the whole format.
     uint8_t components[MP_NUM_COMPONENTS];