diff --git a/libssh/session.c b/libssh/session.c
index ec127f52..1fe1f432 100644
--- a/libssh/session.c
+++ b/libssh/session.c
@@ -209,6 +209,9 @@ void ssh_free(ssh_session session) {
     ssh_list_free(session->ssh_message_list);
   }
 
+  if (session->packet_callbacks)
+    ssh_list_free(session->packet_callbacks);
+
   if (session->identity) {
     char *id;