diff --git a/gcc/builtin-attrs.def b/gcc/builtin-attrs.def
index 92fe65e1e0df27570dd54eb135fcd361a7d3d04b..10d58649a82fc806cb9ef4f891edc783dda9b512 100644
--- a/gcc/builtin-attrs.def
+++ b/gcc/builtin-attrs.def
@@ -69,7 +69,7 @@ DEF_LIST_INT_INT (3,0)
 DEF_LIST_INT_INT (3,4)
 #undef DEF_LIST_INT_INT
 
-/* Construct tress for identifiers.  */
+/* Construct trees for identifiers.  */
 DEF_ATTR_IDENT (ATTR_CONST, "const")
 DEF_ATTR_IDENT (ATTR_FORMAT, "format")
 DEF_ATTR_IDENT (ATTR_FORMAT_ARG, "format_arg")