1 files changed, 2 insertions, 0 deletions
diff --git a/player/lua.c b/player/lua.c
index cf0c5caa41..3bf5298578 100644
--- a/player/lua.c
+++ b/player/lua.c
@@ -967,6 +967,8 @@ static int script_set_osd_ass(lua_State *L)
     int res_x = luaL_checkinteger(L, 1);
     int res_y = luaL_checkinteger(L, 2);
     const char *text = luaL_checkstring(L, 3);
+    if (!text[0])
+        text = " "; // force external OSD initialization
     osd_set_external(mpctx->osd, res_x, res_y, (char *)text);
     mp_input_wakeup(mpctx->input);
     return 0;