diff --git a/src/core/linux/convhelper.cpp b/src/core/linux/convhelper.cpp
index ddb25f17..319cb5fe 100644
--- a/src/core/linux/convhelper.cpp
+++ b/src/core/linux/convhelper.cpp
@@ -25,6 +25,7 @@
 #endif
 
 #include <string>
+#include <cstring>
 
 #include <iconv.h>
 #include <errno.h>