diff --git a/libs/pbd/windows_timer_utils.cc b/libs/pbd/windows_timer_utils.cc
index e6d3f8fd9c..be09b18f31 100644
--- a/libs/pbd/windows_timer_utils.cc
+++ b/libs/pbd/windows_timer_utils.cc
@@ -111,3 +111,4 @@ reset_resolution ()
 
 } // namespace MMTIMERS
 
+} // namespace PBD