diff --git a/firmware/target/arm/rk27xx/system-rk27xx.c b/firmware/target/arm/rk27xx/system-rk27xx.c
index 8c75dee..39c59d9 100644
--- a/firmware/target/arm/rk27xx/system-rk27xx.c
+++ b/firmware/target/arm/rk27xx/system-rk27xx.c
@@ -128,6 +128,7 @@ void system_init(void)
     MCSDR_T_RFC = (64*100) / 1000; /* autorefresh period */
     MCSDR_T_RP = 1;                /* precharge period */
     MCSDR_T_RCD = 1;               /* active to RD/WR delay */
+    MCSDR_T_RCD = 1;               /* active to RD/WR delay */
 
     /* turn off clock for unused modules */
     SCU_CLKCFG |= (1<<31) |        /* WDT pclk */