diff --git a/lib/krb5/krb5.h b/lib/krb5/krb5.h
index c97d9f9cc..37b5cfba1 100644
--- a/lib/krb5/krb5.h
+++ b/lib/krb5/krb5.h
@@ -344,7 +344,7 @@ typedef krb5_config_binding krb5_config_section;
 
 typedef struct krb5_context_data {
     krb5_enctype *etypes;
-    char *default_realm;
+    char **default_realms;
     time_t max_skew;
     time_t kdc_timeout;
     unsigned max_retries;