diff --git a/pkgs/development/compilers/fsharp/default.nix b/pkgs/development/compilers/fsharp/default.nix
index 8cc283bc3f1..963c7e2cb5c 100644
--- a/pkgs/development/compilers/fsharp/default.nix
+++ b/pkgs/development/compilers/fsharp/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ mono pkgconfig autoconf automake which ];
   configurePhase = ''
-    substituteInPlace ./autogen.sh "/usr/bin/env sh" "/bin/sh"
+    substituteInPlace ./autogen.sh --replace "/usr/bin/env sh" "/bin/sh"
     ./autogen.sh --prefix $out
   '';