diff --git a/format/FlightSql.proto b/format/FlightSql.proto
index 96fca02230780..d6431bee4c366 100644
--- a/format/FlightSql.proto
+++ b/format/FlightSql.proto
@@ -1684,10 +1684,12 @@ message DoPutUpdateResult {
 /*
  * Explicitly cancel a running query.
  *
- * For distributed queries (ones that use GetFlightInfo->DoGet), this lets a
- * single client explicitly cancel work across all clients, given server
- * support. The transaction/statement is not rolled back. This only indicates
- * the client no longer wishes to read the remainder of the query results.
+ * This lets a single client explicitly cancel work, no matter how many clients
+ * are involved/whether the query is distributed or not, given server
+ * support. The transaction/statement is not rolled back; it is the
+ * application's job to commit or rollback as appropriate. This only indicates
+ * the client no longer wishes to read the remainder of the query
+ * results or continue submitting data.
  */
 message ActionCancelQuery {
   // The result of the GetFlightInfo RPC that initated the query.