diff --git a/src/bitdht/bdmanager.cc b/src/bitdht/bdmanager.cc
index 934cda5..a7640da 100644
--- a/src/bitdht/bdmanager.cc
+++ b/src/bitdht/bdmanager.cc
@@ -47,6 +47,7 @@
 #include <algorithm>
 #include <sstream>
 #include <iomanip>
+#include <string.h>
 
 #include "util/bdnet.h"
 #include "util/bdrandom.h"