diff --git a/libs/ardour/ltc_file_reader.cc b/libs/ardour/ltc_file_reader.cc
index 5f68a2d5ce..e6dfdabac1 100644
--- a/libs/ardour/ltc_file_reader.cc
+++ b/libs/ardour/ltc_file_reader.cc
@@ -19,8 +19,9 @@
 #include <fcntl.h>
 #include <sys/stat.h>
 
-#include <glibmm.h>
 #include <assert.h>
+#include <string.h>
+#include <glibmm.h>
 
 #include "pbd/error.h"
 #include "pbd/failed_constructor.h"