diff --git a/pkgs/tools/filesystems/jfsutils/default.nix b/pkgs/tools/filesystems/jfsutils/default.nix
index 9e161f5da9c..9712721021e 100644
--- a/pkgs/tools/filesystems/jfsutils/default.nix
+++ b/pkgs/tools/filesystems/jfsutils/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha1 = "291e8bd9d615cf3d27e4000117c81a3602484a50";
   };
 
-  patches = [ ./types.h ];
+  patches = [ ./types.patch ];
 
   buildInputs = [ libuuid ];
 
diff --git a/pkgs/tools/filesystems/jfsutils/types.h b/pkgs/tools/filesystems/jfsutils/types.patch
similarity index 100%
rename from pkgs/tools/filesystems/jfsutils/types.h
rename to pkgs/tools/filesystems/jfsutils/types.patch