diff --git a/apps/backend/backend_main.c b/apps/backend/backend_main.c
index b00fe2e4..c2d9f99f 100644
--- a/apps/backend/backend_main.c
+++ b/apps/backend/backend_main.c
@@ -125,7 +125,9 @@ backend_terminate(clixon_handle h)
     /* Delete all plugins, RPC callbacks, and upgrade callbacks */
     clixon_plugin_module_exit(h);
     /* Delete all process-control entries */
-    clixon_process_delete_all(h); 
+    clixon_process_delete_all(h);
+    /* Free memory associated with plugin_rpc_err() */
+    clixon_plugin_rpc_err_exit(h);
 
     xpath_optimize_exit();
     clixon_pagination_free(h);
diff --git a/lib/clixon/clixon_plugin.h b/lib/clixon/clixon_plugin.h
index 9d0a068d..820a7dec 100644
--- a/lib/clixon/clixon_plugin.h
+++ b/lib/clixon/clixon_plugin.h
@@ -555,6 +555,7 @@ int              clixon_plugin_module_exit(clixon_handle h);
 int clixon_plugin_rpc_err(clixon_handle h, const char *ns,
                           const char *type, const char *tag, const char *info,
                           const char *severity, const char *fmt, ...);
+void clixon_plugin_rpc_err_exit(clixon_handle h);
 int clixon_plugin_rpc_err_set(clixon_handle h);
 int clixon_plugin_report_err(clixon_handle h, cbuf *cbret);
 int clixon_plugin_report_err_xml(clixon_handle h, cxobj **xreg, char *err, ...);
diff --git a/lib/src/clixon_plugin.c b/lib/src/clixon_plugin.c
index 59764b31..62e88bce 100644
--- a/lib/src/clixon_plugin.c
+++ b/lib/src/clixon_plugin.c
@@ -1793,6 +1793,7 @@ clixon_plugin_rpc_err(clixon_handle h,
     int retval = -1;
     int err;
     cvec *cvv = NULL;
+    cvec *old_cvv = clicon_data_cvec_get(h, "rpc_err");
 
     cvv = cvec_new(0);
     if (!cvv)
@@ -1838,10 +1839,27 @@ clixon_plugin_rpc_err(clixon_handle h,
  done:
     if (retval && cvv)
         cvec_free(cvv);
+    if (!retval && old_cvv)
+        cvec_free(old_cvv);
     return retval;
 }
 
+/*! Frees memory associated with clixon_rpc_err().
+ *
+ * @param[in]  h        Clixon
+ */
+void
+clixon_plugin_rpc_err_exit(clixon_handle h)
+{
+    cvec *cvv = clicon_data_cvec_get(h, "rpc_err");
+
+    clicon_ptr_del(h, "rpc_err");
+    cvec_free(cvv);
+}
+
 /*! Returns if the rpc error has already been set.
+ *
+ * @param[in]  h        Clixon
  *
  * @retval     0        The rpc error is not set
  * @retval     1        The rpc error is set