diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index fe8f52a03..3c11866f1 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -910,7 +910,7 @@ typedef struct {
 #define CMD_PM5_BWM_BLE_NAME 0x017F   // payload: [action:u8][name bytes if SET]
 #define BWM_BLE_NAME_ACTION_GET 0x00  // resp: current BLE device name string
 #define BWM_BLE_NAME_ACTION_SET 0x01  // req: name bytes follow the action byte; BWM reboots to apply
-#define BWM_BLE_NAME_MAX_LEN    31    // usable chars; ESP name buffer is 32 incl NUL
+#define BWM_BLE_NAME_MAX_LEN    15    // usable chars; ESP name buffer is 16 incl NUL
 #define BWM_OTA_ACTION_BEGIN 0x00
 #define BWM_OTA_ACTION_WRITE 0x01
 #define BWM_OTA_ACTION_END   0x02