diff --git a/lib/krb5/krb5.h b/lib/krb5/krb5.h
index 3f6014136..80b3f7962 100644
--- a/lib/krb5/krb5.h
+++ b/lib/krb5/krb5.h
@@ -474,8 +474,8 @@ typedef struct krb5_auth_context_data {
     krb5_keyblock *local_subkey;
     krb5_keyblock *remote_subkey;
 
-    int32_t local_seqnumber;
-    int32_t remote_seqnumber;
+    u_int32_t local_seqnumber;
+    u_int32_t remote_seqnumber;
 
     krb5_authenticator authenticator;