diff --git a/osm2pgsql/default.nix b/osm2pgsql/default.nix
index 9c1eba5..1eef554 100644
--- a/osm2pgsql/default.nix
+++ b/osm2pgsql/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   # https://github.com/openstreetmap/osm2pgsql/issues/634
   # https://bz-attachments.freebsd.org/attachment.cgi?id=177390
   patches = [
-    use-geos36.patch
+    ./use-geos36.patch
   ];
 
   #nativeBuildInputs = [ ];