diff --git a/src/config.cpp b/src/config.cpp
index e469587..bc0c7b4 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -54,7 +54,7 @@ void config_valid() {
         body->speaker_volume = 2.0f;
         printf("[Config] Speaker Volume is invalid\n");
     }
-    if (body->inactive_time < 10 || body->inactive_time > 60) {
+    if (body->inactive_time < 5 || body->inactive_time > 60) {
         body->inactive_time = 30;
         printf("[Config] Inactive time is invalid\n");
     }
@@ -70,8 +70,8 @@ void config_valid() {
         body->polling_rate_mode = 0;
         printf("[Config] polling_rate_mode is invalid\n");
     }
-    if (body->haptics_buffer_length < 16 || body->haptics_buffer_length > 255) {
-        body->haptics_buffer_length = 48;
+    if (body->haptics_buffer_length < 16 || body->haptics_buffer_length > 128) {
+        body->haptics_buffer_length = 64;
         printf("[Config] haptics_buffer_length is invalid\n");
     }
     if (body->controller_mode > 1) {
diff --git a/src/config.h b/src/config.h
index 13af2bd..b723861 100644
--- a/src/config.h
+++ b/src/config.h
@@ -14,7 +14,7 @@ struct __attribute__((packed)) Config_body {
     uint8_t disable_inactive_disconnect; // bool: 0 disable,1 enable
     uint8_t disable_pico_led; // bool
     uint8_t polling_rate_mode; // 0: 250Hz, 1: 500Hz, 2: real-time
-    uint8_t haptics_buffer_length; // [16,255]
+    uint8_t haptics_buffer_length; // [16,128]
     uint8_t controller_mode; // 0: DS5, 1: DSE 自动切换识别太麻烦了，懒的做了，期待pr
 };