diff --git a/src/mod/applications/mod_commands/mod_commands.c b/src/mod/applications/mod_commands/mod_commands.c
index 64f087969f..75d8625af2 100644
--- a/src/mod/applications/mod_commands/mod_commands.c
+++ b/src/mod/applications/mod_commands/mod_commands.c
@@ -2965,6 +2965,10 @@ SWITCH_STANDARD_API(uuid_drop_dtmf)
 	dup = strdup(cmd);
 	argc = switch_split(dup, ' ', argv);
 
+	if ( argc < 4 ) {
+		stream->write_function(stream, "-USAGE: %s\n", UUID_DROP_DTMF_SYNTAX);
+		goto end;
+	}
 
 	if (argv[0]) {
 		uuid = argv[0];