diff --git a/src/libslic3r/Time.cpp b/src/libslic3r/Time.cpp
index de94b20853..81b9af49e2 100644
--- a/src/libslic3r/Time.cpp
+++ b/src/libslic3r/Time.cpp
@@ -7,6 +7,7 @@
 #include <ctime>
 #include <cstdio>
 #include <cctype>
+#include <cstring>
 
 #ifdef _MSC_VER
 #include <map>