diff --git a/pkgs/development/ocaml-modules/mstruct/default.nix b/pkgs/development/ocaml-modules/mstruct/default.nix
deleted file mode 100644
index ae26f879ef8c..000000000000
--- a/pkgs/development/ocaml-modules/mstruct/default.nix
+++ /dev/null
@@ -1,24 +0,0 @@
-{ stdenv, fetchFromGitHub, buildDunePackage, cstruct }:
-
-buildDunePackage rec {
-	pname = "mstruct";
-	version = "1.4.0";
-
-  minimumOCamlVersion = "4.02";
-
-	src = fetchFromGitHub {
-		owner = "mirage";
-		repo = "ocaml-${pname}";
-		rev = "v${version}";
-		sha256 = "1p4ygwzs3n1fj4apfib0z0sabpph21bkq1dgjk4bsa59pq4prncm";
-	};
-
-	propagatedBuildInputs = [ cstruct ];
-
-	meta = {
-		description = "A thin mutable layer on top of cstruct";
-		license = stdenv.lib.licenses.isc;
-		maintainers = [ stdenv.lib.maintainers.vbgl ];
-		inherit (src.meta) homepage;
-	};
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 757a77f0403a..2947b369ed8c 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -599,8 +599,6 @@ let
 
     mparser =  callPackage ../development/ocaml-modules/mparser { };
 
-    mstruct =  callPackage ../development/ocaml-modules/mstruct { };
-
     mtime =  callPackage ../development/ocaml-modules/mtime { };
 
     mustache =  callPackage ../development/ocaml-modules/mustache { };