diff --git a/rcw/ls1028a-mnt-reform2/R_PSPH_0xb8be/rcw_1500_sdboot.rcw b/rcw/ls1028a-mnt-reform2/R_PSPH_0xb8be/rcw_1500_sdboot.rcw
index 70a88c3a2159315697a852343d969c300c2967c0..555a04757f6eafdf393ce2965a152ca4c151411d 100644
--- a/rcw/ls1028a-mnt-reform2/R_PSPH_0xb8be/rcw_1500_sdboot.rcw
+++ b/rcw/ls1028a-mnt-reform2/R_PSPH_0xb8be/rcw_1500_sdboot.rcw
@@ -34,7 +34,9 @@ FLASH_CFG1=3
 SYSCLK_FREQ=600 /* 100 MHz */
 GPIO_LED_NUM=25
 GPIO_LED_EN=1
-IIC2_PMUX=6
+/*IIC2_PMUX=6*/
+IIC2_PMUX=1
+
 IIC3_PMUX=3
 IIC4_PMUX=1
 IIC5_PMUX=1