diff --git a/client/src/cmdhfmfu.c b/client/src/cmdhfmfu.c
index 9c8514241..d5ac6537b 100644
--- a/client/src/cmdhfmfu.c
+++ b/client/src/cmdhfmfu.c
@@ -2714,6 +2714,7 @@ int CmdHF14MfUTamper(const char *Cmd) {
     if (use_msg && msg_len != 4) {
         PrintAndLogEx(WARNING, "The tamper message must be 4 hex bytes if provided");
         DropField();
+        CLIParserFree(ctx);
         return PM3_ESOFT;
     }