diff --git a/client/src/cmdhfmf.c b/client/src/cmdhfmf.c
index de0d68027..0f232f4db 100644
--- a/client/src/cmdhfmf.c
+++ b/client/src/cmdhfmf.c
@@ -3316,6 +3316,7 @@ static int CmdHF14AMfSim(const char *Cmd) {
                 break;
             default:
                 PrintAndLogEx(WARNING, "Invalid parameter for UID");
+                CLIParserFree(ctx);
                 return PM3_EINVARG;
         }
     }