diff --git a/src/rpc/cli.cpp b/src/rpc/cli.cpp
index a95ff2f..f3ff507 100644
--- a/src/rpc/cli.cpp
+++ b/src/rpc/cli.cpp
@@ -210,7 +210,7 @@ static int cli_completion(char *token, char ***array)
  */
 static int cli_check_secret(const char *source)
 {
-   if (boost::regex_match(source, cli_regex_secret()))
+   if (nullptr != cli_regex_secret().expression() && boost::regex_match(source, cli_regex_secret()))
       return 1;
    
    return 0;