diff --git a/cmd-send-prefix.c b/cmd-send-prefix.c
index 2d17bea1..76ccedd9 100644
--- a/cmd-send-prefix.c
+++ b/cmd-send-prefix.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-send-prefix.c,v 1.20 2009-01-11 23:31:46 nicm Exp $ */
+/* $Id: cmd-send-prefix.c,v 1.21 2009-01-13 00:48:50 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -53,6 +53,12 @@ cmd_send_prefix_exec(struct cmd *self, struct cmd_ctx *ctx)
 	key = options_get_number(&s->options, "prefix");
 	window_pane_key(wl->window->active, ctx->curclient, key);
 
+	/* Don't want this to be repeated so reset command timer. */
+	if (ctx->curclient != NULL) {
+		if (gettimeofday(&ctx->curclient->command_timer, NULL) != 0)
+			fatal("gettimeofday");
+	}
+
 	if (ctx->cmdclient != NULL)
 		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
 }