diff --git a/common/utility.cpp b/common/utility.cpp
index 2042836..0232a07 100644
--- a/common/utility.cpp
+++ b/common/utility.cpp
@@ -13,6 +13,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include <cstdio>
 #include <cctype>
+#include <cstring>
 
 #include "treemodel.h"
 #include "utility.h"