diff --git a/client/src/cmdhfmfdes.c b/client/src/cmdhfmfdes.c
index 35ab81d60..2cec9fd90 100644
--- a/client/src/cmdhfmfdes.c
+++ b/client/src/cmdhfmfdes.c
@@ -5205,6 +5205,7 @@ static int CmdHF14ADesChKeySettings(const char *Cmd) {
         return PM3_ESOFT;
     if (res == 2) {
         PrintAndLogEx(ERR, "Key settings must have 1 byte length");
+        CLIParserFree(ctx);
         return PM3_EINVARG;
     }