diff --git a/src/hb-aat-layout-kerx-table.hh b/src/hb-aat-layout-kerx-table.hh
index be1b339aa..d974f6ac7 100644
--- a/src/hb-aat-layout-kerx-table.hh
+++ b/src/hb-aat-layout-kerx-table.hh
@@ -891,7 +891,7 @@ struct KerxTable
       reverse = bool (st->u.header.coverage & st->u.header.Backwards) !=
 		HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction);
 
-      if (!c->buffer->message (c->font, "start %c%c%c%c subtable %d", HB_UNTAG (thiz()->tableTag), c->lookup_index))
+      if (!c->buffer->message (c->font, "start table %c%c%c%c subtable %d", HB_UNTAG (thiz()->tableTag), c->lookup_index))
 	goto skip;
 
       if (!seenCrossStream &&
@@ -923,7 +923,7 @@ struct KerxTable
       if (reverse)
 	c->buffer->reverse ();
 
-      (void) c->buffer->message (c->font, "end %c%c%c%c subtable %d", HB_UNTAG (thiz()->tableTag), c->lookup_index);
+      (void) c->buffer->message (c->font, "end table %c%c%c%c subtable %d", HB_UNTAG (thiz()->tableTag), c->lookup_index);
 
     skip:
       st = &StructAfter<SubTable> (*st);
diff --git a/src/hb-aat-layout-morx-table.hh b/src/hb-aat-layout-morx-table.hh
index d8df579f5..06e454e28 100644
--- a/src/hb-aat-layout-morx-table.hh
+++ b/src/hb-aat-layout-morx-table.hh
@@ -1015,7 +1015,7 @@ struct Chain
 		bool (subtable->get_coverage () & ChainSubtable<Types>::Backwards) !=
 		HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction);
 
-      if (!c->buffer->message (c->font, "start chain subtable %d", c->lookup_index))
+      if (!c->buffer->message (c->font, "start table morx chainsubtable %d", c->lookup_index))
 	goto skip;
 
       if (reverse)
@@ -1026,7 +1026,7 @@ struct Chain
       if (reverse)
 	c->buffer->reverse ();
 
-      (void) c->buffer->message (c->font, "end chain subtable %d", c->lookup_index);
+      (void) c->buffer->message (c->font, "end table morx chainsubtable %d", c->lookup_index);
 
       if (unlikely (!c->buffer->successful)) return;