diff --git a/lib/krb5/krb5_locl.h b/lib/krb5/krb5_locl.h
index 5ac63768d..25dc62db5 100644
--- a/lib/krb5/krb5_locl.h
+++ b/lib/krb5/krb5_locl.h
@@ -101,6 +101,7 @@
 #include <krb5_err.h>
 #include <asn1_err.h>
 #include <hdb_err.h>
+#include <error.h>
 
 void		krb5_data_zero(krb5_data *);
 void 		krb5_data_free(krb5_data *);