diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c
index c2ab2ce2f58..6e0dcb62e72 100644
--- a/src/interfaces/libpq/fe-exec.c
+++ b/src/interfaces/libpq/fe-exec.c
@@ -1362,8 +1362,7 @@ 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;