diff --git a/nano/lib/locks.cpp b/nano/lib/locks.cpp
index 56a018b13d..3217e5e5c8 100644
--- a/nano/lib/locks.cpp
+++ b/nano/lib/locks.cpp
@@ -1,5 +1,6 @@
 #include <nano/lib/config.hpp>
 #include <nano/lib/locks.hpp>
+#include <nano/lib/stacktrace.hpp>
 #include <nano/lib/utility.hpp>
 
 #include <boost/format.hpp>