diff --git a/NEWS b/NEWS
index 016c7129..a1e30838 100644
--- a/NEWS
+++ b/NEWS
@@ -58,6 +58,8 @@ Miscellaneous:
   (OpenSSL replacement).
 * enhancement: Scrolling the entire contents of dialog boxes.
   Especially useful for multi-file BitTorrent downloads.
+* Report if the Lua function edit_bookmark_dialog receives the wrong
+  number or types of arguments instead of silently failing.
 
 //////////////////////////////////////////////////////////////////////
 The following changes should be removed from NEWS before ELinks 0.13.0
diff --git a/src/scripting/lua/core.c b/src/scripting/lua/core.c
index 8aec3a91..0700cc98 100644
--- a/src/scripting/lua/core.c
+++ b/src/scripting/lua/core.c
@@ -369,6 +369,7 @@ l_edit_bookmark_dialog(LS)
 
 	if (!lua_isstring(S, 1) || !lua_isstring(S, 2)
 	    || !lua_isstring(S, 3) || !lua_isfunction(S, 4)) {
+		alert_lua_error("bad arguments to edit_bookmark_dialog");
 		lua_pushnil(S);
 		return 1;
 	}