diff --git a/modules/languages/siren-rust.el b/modules/languages/siren-rust.el
index fbe358b..847f372 100644
--- a/modules/languages/siren-rust.el
+++ b/modules/languages/siren-rust.el
@@ -74,7 +74,7 @@
   (cargo-process--command-test--additional-args "-- --nocapture")
 
   :preface
-  (defun siren-cargo-process-get-current-mod-path ()
+  (defun siren-cargo-process--get-current-mod-path ()
     "Get the current module name."
     (let ((filename (buffer-file-name)))
       (when (and filename