diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index b4d4baca..028bbf7a 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -2704,7 +2704,7 @@ int CmdHF14AMfAuth4(const char *cmd) {
 	}
 	
 	if (keylen != 16) {
-		PrintAndLog("ERROR: <Key Num> must be 16 bytes long instead of: %d", keylen);
+		PrintAndLog("ERROR: <Key Value> must be 16 bytes long instead of: %d", keylen);
 		return 1;
 	}