diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index 93032d6..4ad87bc 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -1735,6 +1735,10 @@
 	    generate_MULT_EXPR(cctx, ISN_EXECUTE, count);
 	else if (cmdidx == CMD_echomsg)
 	    generate_MULT_EXPR(cctx, ISN_ECHOMSG, count);
+#ifdef HAS_MESSAGE_WINDOW
+	else if (cmdidx == CMD_echowindow)
+	    generate_MULT_EXPR(cctx, ISN_ECHOWINDOW, count);
+#endif
 	else if (cmdidx == CMD_echoconsole)
 	    generate_MULT_EXPR(cctx, ISN_ECHOCONSOLE, count);
 	else