diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index 6465ffe..813a8a9 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -137,8 +137,8 @@
         "     run remote shell command (interactive shell if no command given)\n"
         "     -e: choose escape character, or \"none\"; default '~'\n"
         "     -n: don't read from stdin\n"
-        "     -T: disable PTY allocation\n"
-        "     -t: force PTY allocation\n"
+        "     -T: disable pty allocation\n"
+        "     -t: allocate a pty if on a tty (-tt: force pty allocation)\n"
         "     -x: disable remote exit codes and stdout/stderr separation\n"
         " emu COMMAND              run emulator console command\n"
         "\n"