diff --git a/src/tools/ceph-dencoder/denc_plugin.h b/src/tools/ceph-dencoder/denc_plugin.h
index e43ad26e174f6..c5eacce47cb43 100644
--- a/src/tools/ceph-dencoder/denc_plugin.h
+++ b/src/tools/ceph-dencoder/denc_plugin.h
@@ -23,6 +23,7 @@ class DencoderPlugin {
     other.dencoders.clear();
   }
   ~DencoderPlugin() {
+    unregister_dencoders();
 #if !defined(__FreeBSD__)
     if (mod) {
       dlclose(mod);