diff --git a/Changes b/Changes
index 44ef0f92b..3d83cb2ab 100644
--- a/Changes
+++ b/Changes
@@ -89,6 +89,8 @@ Other libraries:
 OCamlbuild:
 - PR#6794, PR#6809: pass package-specific include flags when building C files
   (Jérémie Dimino, request by Peter Zotov)
+- GPR#208: add "asm" tag to ocamlbuild to enable flag -S
+  (ygrek)
 
 Bug fixes:
 * PR#4539: change exception string raised when comparing functional values
diff --git a/ocamlbuild/ocaml_specific.ml b/ocamlbuild/ocaml_specific.ml
index 902ec3d05..d332ff311 100644
--- a/ocamlbuild/ocaml_specific.ml
+++ b/ocamlbuild/ocaml_specific.ml
@@ -742,7 +742,8 @@ flag ["ocaml"; "compile"; "keep_docs";] (A "-keep-docs");
 flag ["ocaml"; "compile"; "keep_locs";] (A "-keep-locs");
 flag ["ocaml"; "absname"; "compile"] (A "-absname");;
 flag ["ocaml"; "absname"; "infer_interface"] (A "-absname");;
-flag ["ocaml"; "byte"; "compile"; "compat_32";] (A "-compat-32");
+flag ["ocaml"; "byte"; "compile"; "compat_32";] (A "-compat-32");;
+flag ["ocaml";"compile";"native";"asm"] & S [A "-S"];;
 
 
 (* threads, with or without findlib *)