diff --git a/lib/gssapi/gssapi/gssapi.h b/lib/gssapi/gssapi/gssapi.h
index 185d52ac3..376ac3203 100644
--- a/lib/gssapi/gssapi/gssapi.h
+++ b/lib/gssapi/gssapi/gssapi.h
@@ -811,7 +811,7 @@ extern gss_OID GSSAPI_LIB_VARIABLE GSS_C_ATTR_STREAM_SIZES;
 OM_uint32 GSSAPI_LIB_FUNCTION
 gss_context_query_attributes(OM_uint32 * /* minor_status */,
 			     const gss_ctx_id_t /* context_handle */,
-			     gss_OID /* attribute */,
+			     const gss_OID /* attribute */,
 			     void * /*data*/,
 			     size_t /* len */);
 /*