diff --git a/firmware/target/arm/rk27xx/i2c-rk27xx.c b/firmware/target/arm/rk27xx/i2c-rk27xx.c
index 62f6d01c85..6fddde0f95 100644
--- a/firmware/target/arm/rk27xx/i2c-rk27xx.c
+++ b/firmware/target/arm/rk27xx/i2c-rk27xx.c
@@ -152,7 +152,7 @@ int i2c_write(unsigned char slave, int address, int len,
    i2c_iomux(slave);
 
    /* clear all flags */
-   I2C_ISR = 0x00
+   I2C_ISR = 0x00;
    I2C_IER = 0x00;
 
    /* START */