diff --git a/input-keys.c b/input-keys.c
index 9d4043ef..5e54d121 100644
--- a/input-keys.c
+++ b/input-keys.c
@@ -257,26 +257,20 @@ input_key(struct window_pane *wp, struct screen *s, struct bufferevent *bev,
 	return (0);
 }
 
-/* Translate mouse and output. */
-static void
-input_key_mouse(struct window_pane *wp, struct mouse_event *m)
+/* Get mouse event string. */
+int
+input_key_get_mouse(struct screen *s, struct mouse_event *m, u_int x, u_int y,
+    const char **rbuf, size_t *rlen)
 {
-	struct screen	*s = wp->screen;
-	char		 buf[40];
+	static char	 buf[40];
 	size_t		 len;
-	u_int		 x, y;
 
-	/* Ignore events if no mouse mode or the pane is not visible. */
-	if (m->ignore || (s->mode & ALL_MOUSE_MODES) == 0)
-		return;
-	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
-		return;
-	if (!window_pane_visible(wp))
-		return;
+	*rbuf = NULL;
+	*rlen = 0;
 
 	/* If this pane is not in button or all mode, discard motion events. */
 	if (MOUSE_DRAG(m->b) && (s->mode & MOTION_MOUSE_MODES) == 0)
-	    return;
+		return (0);
 
 	/*
 	 * If this event is a release event and not in all mode, discard it.
@@ -288,13 +282,13 @@ input_key_mouse(struct window_pane *wp, struct mouse_event *m)
 		if (MOUSE_DRAG(m->sgr_b) &&
 		    MOUSE_BUTTONS(m->sgr_b) == 3 &&
 		    (~s->mode & MODE_MOUSE_ALL))
-			return;
+			return (0);
 	} else {
 		if (MOUSE_DRAG(m->b) &&
 		    MOUSE_BUTTONS(m->b) == 3 &&
 		    MOUSE_BUTTONS(m->lb) == 3 &&
 		    (~s->mode & MODE_MOUSE_ALL))
-			return;
+			return (0);
 	}
 
 	/*
@@ -311,19 +305,43 @@ input_key_mouse(struct window_pane *wp, struct mouse_event *m)
 		    m->sgr_b, x + 1, y + 1, m->sgr_type);
 	} else if (s->mode & MODE_MOUSE_UTF8) {
 		if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33)
-			return;
+			return (0);
 		len = xsnprintf(buf, sizeof buf, "\033[M");
 		len += input_split2(m->b + 32, &buf[len]);
 		len += input_split2(x + 33, &buf[len]);
 		len += input_split2(y + 33, &buf[len]);
 	} else {
 		if (m->b > 223)
-			return;
+			return (0);
 		len = xsnprintf(buf, sizeof buf, "\033[M");
 		buf[len++] = m->b + 32;
 		buf[len++] = x + 33;
 		buf[len++] = y + 33;
 	}
+
+	*rbuf = buf;
+	*rlen = len;
+	return (1);
+}
+
+/* Translate mouse and output. */
+static void
+input_key_mouse(struct window_pane *wp, struct mouse_event *m)
+{
+	struct screen	*s = wp->screen;
+	u_int		 x, y;
+	const char	*buf;
+	size_t		 len;
+
+	/* Ignore events if no mouse mode or the pane is not visible. */
+	if (m->ignore || (s->mode & ALL_MOUSE_MODES) == 0)
+		return;
+	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
+		return;
+	if (!window_pane_visible(wp))
+		return;
+	if (!input_key_get_mouse(s, m, x, y, &buf, &len))
+		return;
 	log_debug("writing mouse %.*s to %%%u", (int)len, buf, wp->id);
 	bufferevent_write(wp->event, buf, len);
 }
diff --git a/popup.c b/popup.c
index 05ff1b4c..299d4e76 100644
--- a/popup.c
+++ b/popup.c
@@ -225,7 +225,8 @@ popup_key_cb(struct client *c, struct key_event *event)
 	struct cmdq_item	*new_item;
 	struct cmd_parse_result	*pr;
 	struct format_tree	*ft;
-	const char		*cmd;
+	const char		*cmd, *buf;
+	size_t			 len;
 
 	if (KEYC_IS_MOUSE(event->key)) {
 		if (pd->dragging != OFF) {
@@ -258,14 +259,20 @@ popup_key_cb(struct client *c, struct key_event *event)
 	}
 
 	if (pd->ictx != NULL && (pd->flags & POPUP_WRITEKEYS)) {
-		if (KEYC_IS_MOUSE(event->key))
-			return (0);
 		if (((pd->flags & (POPUP_CLOSEEXIT|POPUP_CLOSEEXITZERO)) == 0 ||
 		    pd->job == NULL) &&
 		    (event->key == '\033' || event->key == '\003'))
 			return (1);
 		if (pd->job == NULL)
 			return (0);
+		if (KEYC_IS_MOUSE(event->key)) {
+			/* Must be inside, checked already. */
+			if (!input_key_get_mouse(&pd->s, m, m->x - pd->px,
+			    m->y - pd->py, &buf, &len))
+				return (0);
+			bufferevent_write(job_get_event(pd->job), buf, len);
+			return (0);
+		}
 		input_key(NULL, &pd->s, job_get_event(pd->job), event->key);
 		return (0);
 	}
diff --git a/tmux.h b/tmux.h
index 53bbc222..326f77dd 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2315,6 +2315,8 @@ void	 input_parse_screen(struct input_ctx *, struct screen *, u_char *,
 int	 input_key_pane(struct window_pane *, key_code, struct mouse_event *);
 int	 input_key(struct window_pane *, struct screen *, struct bufferevent *,
 	     key_code);
+int	 input_key_get_mouse(struct screen *, struct mouse_event *, u_int,
+	     u_int, const char **, size_t *);
 
 /* xterm-keys.c */
 char	*xterm_keys_lookup(key_code);