diff --git a/cmd-split-window.c b/cmd-split-window.c
index 289149b9..dafe7ca4 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -38,8 +38,8 @@ const struct cmd_entry cmd_new_pane_entry = {
 	.name = "new-pane",
 	.alias = "newp",
 
-	.args = { "bBc:de:EfF:hIkl:Lm:p:PR:s:S:t:T:vx:X:y:Y:Z", 0, -1, NULL },
-	.usage = "[-bdefhIklPvZ] [-c start-directory] [-e environment] "
+	.args = { "bWc:de:EfF:hIkl:Lm:p:PR:s:S:t:T:vx:X:y:Y:Z", 0, -1, NULL },
+	.usage = "[-bdefhIklPvWZ] [-c start-directory] [-e environment] "
 		 "[-F format] [-l size] [-m message] [-p percentage] "
 		 "[-s style] [-S active-border-style] "
 		 "[-R inactive-border-style] [-T title] [-x width] [-y height] "
@@ -56,8 +56,8 @@ const struct cmd_entry cmd_split_window_entry = {
 	.name = "split-window",
 	.alias = "splitw",
 
-	.args = { "bBc:de:EfF:hIkl:m:p:PR:s:S:t:T:vZ", 0, -1, NULL },
-	.usage = "[-bdefhIklPvZ] [-c start-directory] [-e environment] "
+	.args = { "bWc:de:EfF:hIkl:m:p:PR:s:S:t:T:vZ", 0, -1, NULL },
+	.usage = "[-bdefhIklPvWZ] [-c start-directory] [-e environment] "
 		 "[-F format] [-l size] [-m message] [-p percentage] "
 		 "[-s style] [-S active-border-style] "
 		 "[-R inactive-border-style] [-T title] " CMD_TARGET_PANE_USAGE " "
@@ -245,13 +245,13 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	if (input)
 		return (CMD_RETURN_WAIT);
 
-	if (args_has(args, 'B')) {
+	if (args_has(args, 'W')) {
 		/*
-		 * With -B, block this command queue item until the pane's
-		 * command exits; window_pane_block_finish will be called to
+		 * With -W, block this command queue item until the pane's
+		 * command exits; window_pane_wait_finish will be called to
 		 * continue it.
 		 */
-		new_wp->block_item = item;
+		new_wp->wait_item = item;
 		return (CMD_RETURN_WAIT);
 	}
 	return (CMD_RETURN_NORMAL);
diff --git a/server.c b/server.c
index 7b77da73..bf556fd5 100644
--- a/server.c
+++ b/server.c
@@ -497,7 +497,7 @@ server_child_exited(pid_t pid, int status)
 				log_debug("%%%u exited", wp->id);
 				wp->flags |= PANE_EXITED;
 
-				window_pane_block_finish(wp);
+				window_pane_wait_finish(wp);
 
 				if (window_pane_destroy_ready(wp))
 					server_destroy_pane(wp, 1);
diff --git a/tmux.1 b/tmux.1
index c282e88d..ab53f5ab 100644
--- a/tmux.1
+++ b/tmux.1
@@ -3414,7 +3414,7 @@ but a different format may be specified with
 .Fl F .
 .Tg newp
 .It Xo Ic new\-pane
-.Op Fl bBdefhIkPvZ
+.Op Fl bdefhIkPvWZ
 .Op Fl c Ar start\-directory
 .Op Fl e Ar environment
 .Op Fl F Ar format
@@ -3490,13 +3490,13 @@ but also sets the
 option for this pane to
 .Ar message .
 .Pp
-.Fl B
-blocks until
+.Fl W
+Waits until
 .Ar shell\-command
 exits, then returns its exit status.
 For example:
 .Bd -literal -offset indent
-$ tmux new-pane -B 'vi afile'
+$ tmux new-pane -W 'vi afile'
 $ echo $?
 0
 .Ed
diff --git a/tmux.h b/tmux.h
index e964cd90..48cf9028 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1300,7 +1300,7 @@ struct window_pane {
 	char		 tty[TTY_NAME_MAX];
 	int		 status;
 	struct timeval	 dead_time;
-	struct cmdq_item *block_item;	/* new-pane -B: waiting for pane exit */
+	struct cmdq_item *wait_item;	/* new-pane -W: waiting for pane exit */
 
 	int		 fd;
 	struct bufferevent *event;
@@ -3432,7 +3432,7 @@ struct window	*window_find_by_id(u_int);
 void		 window_update_activity(struct window *);
 struct window	*window_create(u_int, u_int, u_int, u_int);
 void		 window_pane_set_event(struct window_pane *);
-void            window_pane_block_finish(struct window_pane *);
+void		 window_pane_wait_finish(struct window_pane *);
 struct window_pane *window_get_active_at(struct window *, u_int, u_int);
 struct window_pane *window_find_string(struct window *, const char *);
 int		 window_has_floating_panes(struct window *);
diff --git a/window.c b/window.c
index 3cc00c51..b454c61e 100644
--- a/window.c
+++ b/window.c
@@ -386,7 +386,7 @@ window_pane_destroy_ready(struct window_pane *wp)
 	 * If a command queue item is blocked on this pane, wait for the
 	 * child's exit status before destroying it.
 	 */
-	if (wp->block_item != NULL && (~wp->flags & PANE_STATUSREADY))
+	if (wp->wait_item != NULL && (~wp->flags & PANE_STATUSREADY))
 		return (0);
 	return (1);
 }
@@ -1093,15 +1093,15 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
 }
 
 void
-window_pane_block_finish(struct window_pane *wp)
+window_pane_wait_finish(struct window_pane *wp)
 {
-	struct cmdq_item	*item = wp->block_item;
+	struct cmdq_item	*item = wp->wait_item;
 	struct client		*c;
 	int			 retval = 0;
 
 	if (item == NULL)
 		return;
-	wp->block_item = NULL;
+	wp->wait_item = NULL;
 
 	if (wp->flags & PANE_STATUSREADY) {
 		if (WIFEXITED(wp->status))
@@ -1122,7 +1122,7 @@ window_pane_destroy(struct window_pane *wp)
 	struct window_pane_resize	*r;
 	struct window_pane_resize	*r1;
 
-	window_pane_block_finish(wp);
+	window_pane_wait_finish(wp);
 
 	window_pane_reset_mode_all(wp);
 	free(wp->searchstr);