diff --git a/source3/libsmb/clireadwrite.c b/source3/libsmb/clireadwrite.c
index 16419052b74..f14a816de4c 100644
--- a/source3/libsmb/clireadwrite.c
+++ b/source3/libsmb/clireadwrite.c
@@ -369,6 +369,11 @@ struct tevent_req *cli_pull_send(TALLOC_CTX *mem_ctx,
 		state->chunk_size &= ~(page_size - 1);
 	}
 
+	if (state->chunk_size == 0) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return tevent_req_post(req, ev);
+	}
+
 	if (window_size == 0) {
 		/*
 		 * We use 16 MByte as default window size.