diff --git a/source4/lib/replace/replace.c b/source4/lib/replace/replace.c
index 79ec2b75b9b..db07e49941f 100644
--- a/source4/lib/replace/replace.c
+++ b/source4/lib/replace/replace.c
@@ -29,6 +29,7 @@
 #include "system/passwd.h"
 #include "system/syslog.h"
 #include "system/network.h"
+#include "system/locale.h"
 
 void replace_dummy(void);
 void replace_dummy(void) {}