diff --git a/client/cmdhf14b.c b/client/cmdhf14b.c
index 2aa40dd0..577b4fc8 100644
--- a/client/cmdhf14b.c
+++ b/client/cmdhf14b.c
@@ -679,7 +679,7 @@ int CmdSriWrite(const char *Cmd) {
 	uint8_t blockno = -1;
 	uint8_t data[4] = {0x00};
 	bool isSrix4k = true;
-	char str[22];
+	char str[20];
 
 	if (strlen(Cmd) < 1 || cmdp == 'h' || cmdp == 'H') {
 		PrintAndLog("Usage:  hf 14b write <1|2> <BLOCK> <DATA>");
diff --git a/client/mifare/mifarehost.c b/client/mifare/mifarehost.c
index 746a55a1..a91f67a5 100644
--- a/client/mifare/mifarehost.c
+++ b/client/mifare/mifarehost.c
@@ -336,7 +336,7 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t *key, uint8_t trgBlockNo,
 	SendCommand(&c);
 
 	if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)) {
-		// cards that do not NACK bad keys cause it to get stuck in a loop, so break out of it
+		// some cards can cause it to get stuck in a loop, so break out of it
 		UsbCommand c = {CMD_PING};
 		SendCommand(&c);
 		(void)WaitForResponseTimeout(CMD_ACK,NULL,500);