diff --git a/lib/krb4.h b/lib/krb4.h
index 80570589c..ad314b5eb 100644
--- a/lib/krb4.h
+++ b/lib/krb4.h
@@ -22,6 +22,6 @@
  *
  * $Id$
  ***************************************************************************/
-void Curl_krb_kauth(struct connectdata *conn);
+CURLcode Curl_krb_kauth(struct connectdata *conn);
 
 #endif