diff --git a/lib/krb5/send_to_kdc_plugin.h b/lib/krb5/send_to_kdc_plugin.h
index ee4e6bd90..e0c2979e2 100644
--- a/lib/krb5/send_to_kdc_plugin.h
+++ b/lib/krb5/send_to_kdc_plugin.h
@@ -38,6 +38,8 @@
 
 #include <krb5.h>
 
+#define KRB5_PLUGIN_SEND_TO_KDC "send_to_kdc"
+
 typedef krb5_error_code
 (*krb5plugin_send_to_kdc_func)(krb5_context, 
 			       void *,