diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99bed70dc51f15fc89020d7b4877394501ab0009..7d88e6219d09b4cfceb2945c80ef61c019c92133 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ project(cellframe-sdk C)
 cmake_minimum_required(VERSION 3.0)
 
 set(CMAKE_C_STANDARD 11)
-set(CELLFRAME_SDK_NATIVE_VERSION "2.9-24")
+set(CELLFRAME_SDK_NATIVE_VERSION "2.9-25")
 add_definitions ("-DCELLFRAME_SDK_VERSION=\"${CELLFRAME_SDK_NATIVE_VERSION}\"")
 set(DAPSDK_MODULES "")
 message("Cellframe modules: ${CELLFRAME_MODULES}")
diff --git a/dap-sdk/net/stream/ch/dap_stream_ch.c b/dap-sdk/net/stream/ch/dap_stream_ch.c
index d0e8ec1d2e3a09be0719c7c0071fcb2624842e7e..9c890990f599afc66e6d5be882f0d4504dc098d9 100644
--- a/dap-sdk/net/stream/ch/dap_stream_ch.c
+++ b/dap-sdk/net/stream/ch/dap_stream_ch.c
@@ -149,7 +149,10 @@ void dap_stream_ch_delete(dap_stream_ch_t *a_ch)
  */
 dap_stream_ch_t * dap_stream_ch_find_by_uuid_unsafe(dap_stream_worker_t * a_worker, dap_stream_ch_uuid_t a_ch_uuid)
 {
-    if ( a_worker->channels){
+    if( a_worker == NULL ){
+        log_it(L_WARNING,"Attempt to search for uuid 0x%016llu in NULL worker", a_ch_uuid);
+        return NULL;
+    } else if ( a_worker->channels){
         dap_stream_ch_t * l_ch = NULL;
         pthread_rwlock_rdlock(&a_worker->channels_rwlock);
         HASH_FIND(hh_worker,a_worker->channels ,&a_ch_uuid, sizeof(a_ch_uuid), l_ch );
diff --git a/modules/net/dap_chain_net.c b/modules/net/dap_chain_net.c
index eef2352e4d342ad7df06a707605220bb57846e71..9ea827be42b8d2e41a9feb891b7d714876c393fe 100644
--- a/modules/net/dap_chain_net.c
+++ b/modules/net/dap_chain_net.c
@@ -483,6 +483,7 @@ static void s_node_link_callback_connected(dap_chain_node_client_t * a_node_clie
         a_node_client->ch_chain_net = dap_client_get_stream_ch_unsafe(a_node_client->client,dap_stream_ch_chain_get_id() );
         if(a_node_client->ch_chain_net)
             a_node_client->ch_chain_net_uuid = a_node_client->ch_chain_net->uuid;
+
         dap_stream_ch_chain_pkt_write_unsafe( a_node_client->ch_chain ,
                                                            DAP_STREAM_CH_CHAIN_PKT_TYPE_UPDATE_GLOBAL_DB_REQ, l_net->pub.id.uint64,
                                                         l_chain_id.uint64, l_net->pub.cell_id.uint64, &l_sync_gdb, sizeof(l_sync_gdb));