diff --git a/src/brain.c b/src/brain.c
index c479232d0..64e3578ae 100644
--- a/src/brain.c
+++ b/src/brain.c
@@ -2251,6 +2251,8 @@ void *brain_server_handle_client (void *p)
 
       brain_server_dbs->client_slots[client_idx] = 0;
 
+      hc_thread_mutex_unlock (brain_server_dbs->mux_dbs);
+
       close (client_fd);
 
       return NULL;
@@ -2285,6 +2287,8 @@ void *brain_server_handle_client (void *p)
 
       brain_server_dbs->client_slots[client_idx] = 0;
 
+      hc_thread_mutex_unlock (brain_server_dbs->mux_dbs);
+
       close (client_fd);
 
       return NULL;
@@ -2324,6 +2328,10 @@ void *brain_server_handle_client (void *p)
   {
     brain_logging (stderr, 0, "%s\n", MSG_ENOMEM);
 
+    brain_server_dbs->client_slots[client_idx] = 0;
+
+    close (client_fd);
+
     return NULL;
   }