diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index d08c870eb8d1..9d041a67c295 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -517,7 +517,7 @@ static int stm32_rng_probe(struct platform_device *ofdev)
 	struct stm32_rng_private *priv;
 	struct resource *res;
 
-	priv = devm_kzalloc(dev, sizeof(struct stm32_rng_private), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;