diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c
index 8ecf26b98a3..a5ea452d8d7 100644
--- a/src/interfaces/libpq/fe-exec.c
+++ b/src/interfaces/libpq/fe-exec.c
@@ -1383,8 +1383,7 @@ PQsendQueryStart(PGconn *conn)
 	}
 
 	/* initialize async result-accumulation state */
-	conn->result = NULL;
-	conn->next_result = NULL;
+	pqClearAsyncResult(conn);
 
 	/* reset single-row processing mode */
 	conn->singleRowMode = false;