diff --git a/lib/gssapi/gssapi_locl.h b/lib/gssapi/gssapi_locl.h
index 93adc4b82..a0bea46de 100644
--- a/lib/gssapi/gssapi_locl.h
+++ b/lib/gssapi/gssapi_locl.h
@@ -131,4 +131,7 @@ gssapi_krb5_set_error_string (void);
 char *
 gssapi_krb5_get_error_string (void);
 
+OM_uint32
+_gss_DES3_get_mic_compat(OM_uint32 *minor_status, gss_ctx_id_t ctx);
+
 #endif
diff --git a/lib/gssapi/krb5/gssapi_locl.h b/lib/gssapi/krb5/gssapi_locl.h
index 93adc4b82..a0bea46de 100644
--- a/lib/gssapi/krb5/gssapi_locl.h
+++ b/lib/gssapi/krb5/gssapi_locl.h
@@ -131,4 +131,7 @@ gssapi_krb5_set_error_string (void);
 char *
 gssapi_krb5_get_error_string (void);
 
+OM_uint32
+_gss_DES3_get_mic_compat(OM_uint32 *minor_status, gss_ctx_id_t ctx);
+
 #endif