diff --git a/server/src/TS3ServerClientManager.cpp b/server/src/TS3ServerClientManager.cpp
index c3dd6e4..9b6e607 100644
--- a/server/src/TS3ServerClientManager.cpp
+++ b/server/src/TS3ServerClientManager.cpp
@@ -424,7 +424,7 @@ void VirtualServer::client_move(
 
     TIMING_START(timings);
     if(!server_channel_write_lock.owns_lock()) {
-        server_channel_write_lock.unlock();
+        server_channel_write_lock.lock();
     }
 
     TIMING_STEP(timings, "chan tree l");