diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
index ab911cd5dd81..bd7da225db60 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
@@ -58,7 +58,7 @@ public:
                               bool &quit);
 
     virtual bool
-    GetThreadSuffixSupported ()
+    GetThreadSuffixSupported () override
     {
         return true;
     }