diff --git a/arch/arm/src/stm32/stm32_i2c.c b/arch/arm/src/stm32/stm32_i2c.c
index 1bfcdb562d5..fe7bf385baa 100644
--- a/arch/arm/src/stm32/stm32_i2c.c
+++ b/arch/arm/src/stm32/stm32_i2c.c
@@ -2005,7 +2005,7 @@ FAR struct i2c_master_s *stm32_i2cbus_initialize(int port)
 int stm32_i2cbus_uninitialize(FAR struct i2c_master_s *dev)
 {
   FAR struct stm32_i2c_priv_s *priv = (struct stm32_i2c_priv_s *)dev;
-  irqstate_ flags;
+  irqstate_t flags;
 
   ASSERT(dev);