diff --git a/ffplay.c b/ffplay.c
index 93f64abe15..d827d4461b 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -3074,6 +3074,7 @@ static void show_help(void)
            "v                   cycle video channel\n"
            "t                   cycle subtitle channel\n"
            "w                   show audio waves\n"
+           "s                   activate frame-step mode\n"
            "left/right          seek backward/forward 10 seconds\n"
            "down/up             seek backward/forward 1 minute\n"
            "mouse click         seek to percentage in file corresponding to fraction of width\n"