diff --git a/pkgs/development/ocaml-modules/gen_js_api/default.nix b/pkgs/development/ocaml-modules/gen_js_api/default.nix
index 0d7438949493..aafae7b6ff9e 100644
--- a/pkgs/development/ocaml-modules/gen_js_api/default.nix
+++ b/pkgs/development/ocaml-modules/gen_js_api/default.nix
@@ -9,14 +9,14 @@
   nodejs,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "gen_js_api";
   version = "1.1.5";
 
   src = fetchFromGitHub {
     owner = "LexiFi";
-    repo = pname;
-    rev = "v${version}";
+    repo = "gen_js_api";
+    rev = "v${finalAttrs.version}";
     sha256 = "sha256-baK+/y0s08hHC8/+P7RKOboFnALQpndxBMuhI1WKf2o=";
   };
 
@@ -46,4 +46,4 @@ buildDunePackage rec {
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.bcc32 ];
   };
-}
+})