diff --git a/main/ambient_light.c b/main/ambient_light.c
index 261907f..59da1d8 100644
--- a/main/ambient_light.c
+++ b/main/ambient_light.c
@@ -24,7 +24,7 @@
 #define APDS_9930_REG_PTIME 0x02    // Proximity ADC 时间         0xff
 #define APDS_9930_REG_WTIME 0x03    // Wait 时间                  0xff
 #define APDS_9930_REG_PPULSE 0x0e   // Proximity 脉冲计数          0x00
-#define APDS_9930_REG_CONTROL 0x0f  // 增益控制                  0x00
+#define APDS_9930_REG_CONTROL 0x0f  // 增益控制                    0x00
 #define APDS_9930_REG_Ch0DATAL 0x14  // Ch0 ADC Low data          0x00
 #define APDS_9930_REG_Ch0DATAH 0x15  // Ch0 ADC High data         0x00
 #define APDS_9930_REG_Ch1DATAL 0x16  // Ch1 ADC Low data          0x00