diff --git a/pkgs/by-name/oc/oculante/package.nix b/pkgs/by-name/oc/oculante/package.nix
index fd5eb689ce2b..c2a73185c511 100644
--- a/pkgs/by-name/oc/oculante/package.nix
+++ b/pkgs/by-name/oc/oculante/package.nix
@@ -76,7 +76,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   patchFlags = [
     "-p1"
-    "--directory=../${finalAttrs.pname}-${finalAttrs.version}-vendor"
+    "--directory=../${finalAttrs.pname}-${finalAttrs.version}-vendor/source-registry-0"
   ];
 
   postInstall = ''