diff --git a/src/Log.cpp b/src/Log.cpp
index b72040669b0d7f1c12be79e22a2bba3e309cdb69..9525262853928de6702ed1d547c2df78511d3df2 100644
--- a/src/Log.cpp
+++ b/src/Log.cpp
@@ -1,6 +1,7 @@
 #include "Log.h"
 #include <cstdarg>
 #include <cassert>
+#include <cstring>
 
 using namespace std;
 using namespace PLMD;