diff --git a/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.comp b/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.comp
new file mode 100644
index 00000000000..ac3192e3b5f
--- /dev/null
+++ b/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.comp
@@ -0,0 +1,11 @@
+opam-version: "1"
+version: "4.05.0"
+src: "https://github.com/dra27/ocaml/archive/enable-msvc64-asmcomp-test.tar.gz"
+build: [
+  ["./configure" "-prefix" prefix "-with-debug-runtime"]
+  [make "world"]
+  [make "world.opt"]
+  [make "install"]
+]
+packages: [ "base-unix" "base-bigarray" "base-threads" ]
+env: [[CAML_LD_LIBRARY_PATH = "%{lib}%/stublibs"]]
diff --git a/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.descr b/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.descr
new file mode 100644
index 00000000000..626b2e40406
--- /dev/null
+++ b/compilers/4.05.0/4.05.0+pr974/4.05.0+pr974.descr
@@ -0,0 +1 @@
+Enable msvc64 asmcomp tests
\ No newline at end of file