diff --git a/sync-music/actions.lisp b/sync-music/actions.lisp
index a61288d..af3e343 100644
--- a/sync-music/actions.lisp
+++ b/sync-music/actions.lisp
@@ -59,8 +59,8 @@ Pushes status message about this action to QUEUE if given."))
                      :element-type 'octet)
       (setf buf (make-array (file-length input) :element-type 'octet))
       (read-sequence buf input))
-    (setf buf (replace-text-buffer buf ".flac" ".opus"))
-    (setf buf (replace-text-buffer buf ".wav" ".opus"))
+    (setf buf (replace-text-buffer buf ".flac\"" ".opus\""))
+    (setf buf (replace-text-buffer buf ".wav\"" ".opus\""))
     (with-open-file (output
                      (action-target a)
                      :element-type 'octet