diff --git a/src/share/utf8.c b/src/share/utf8.c
index 770a16bb..f1e5708d 100644
--- a/src/share/utf8.c
+++ b/src/share/utf8.c
@@ -25,6 +25,7 @@
 #include <string.h>
 
 #include "utf8.h"
+#include "charset.h"
 
 
 #ifdef _WIN32