diff --git a/arch/arm/src/stm32/stm32f40xxx_i2c.c b/arch/arm/src/stm32/stm32f40xxx_i2c.c
index 3d7d5567f8..8d3a9fa84d 100644
--- a/arch/arm/src/stm32/stm32f40xxx_i2c.c
+++ b/arch/arm/src/stm32/stm32f40xxx_i2c.c
@@ -2015,7 +2015,6 @@ static int stm32_i2c_isr(struct stm32_i2c_priv_s *priv)
 #else
       /* Clear all interrupts */
 
-      uint32_t regval;
       regval  = stm32_i2c_getreg(priv, STM32_I2C_CR2_OFFSET);
       regval &= ~I2C_CR2_ALLINTS;
       stm32_i2c_putreg(priv, STM32_I2C_CR2_OFFSET, regval);