diff --git a/pkgs/development/ocaml-modules/javalib/default.nix b/pkgs/development/ocaml-modules/javalib/default.nix
index 2fa72dcf07f1..365fcc677cc9 100644
--- a/pkgs/development/ocaml-modules/javalib/default.nix
+++ b/pkgs/development/ocaml-modules/javalib/default.nix
@@ -20,6 +20,8 @@ stdenv.mkDerivation rec {
 
   createFindlibDestdir = true;
 
+  preConfigure = "patchShebangs ./configure.sh";
+
   configureScript = "./configure.sh";
   dontAddPrefix = "true";
 
diff --git a/pkgs/development/ocaml-modules/sawja/default.nix b/pkgs/development/ocaml-modules/sawja/default.nix
index bed87a50f81d..ef3ab9a46b93 100644
--- a/pkgs/development/ocaml-modules/sawja/default.nix
+++ b/pkgs/development/ocaml-modules/sawja/default.nix
@@ -19,6 +19,8 @@ stdenv.mkDerivation rec {
 
   createFindlibDestdir = true;
 
+  preConfigure = "patchShebangs ./configure.sh";
+
   configureScript = "./configure.sh";
   dontAddPrefix = "true";