diff --git a/arm9/source/i2c.c b/arm9/source/i2c.c
index 5074cf6..8bbf016 100644
--- a/arm9/source/i2c.c
+++ b/arm9/source/i2c.c
@@ -19,7 +19,7 @@
 #include <stdbool.h>
 #include "types.h"
 #include "i2c.h"
-
+#include "utils.h"
 
 #define I2C1_REGS_BASE  (0x10161000)
 
@@ -214,8 +214,10 @@ bool I2C_writeRegBuf(I2cDevice devId, u8 regAddr, const u8 *in, u32 size)
 
 u8 I2C_readReg(I2cDevice devId, u8 regAddr)
 {
+    // note: don't use it in itcm code
     u8 data;
     if(!I2C_readRegBuf(devId, regAddr, &data, 1)) return 0xFF;
+    wait(3);
     return data;
 }