diff --git a/fdts/stm32mp15-ddr.dtsi b/fdts/stm32mp15-ddr.dtsi
index 1a5c51c..4825691 100644
--- a/fdts/stm32mp15-ddr.dtsi
+++ b/fdts/stm32mp15-ddr.dtsi
@@ -5,7 +5,7 @@
 
 / {
 	soc {
-		ddr: ddr@5A003000{
+		ddr: ddr@5a003000{
 
 			compatible = "st,stm32mp1-ddr";
 
diff --git a/fdts/stm32mp157c-security.dtsi b/fdts/stm32mp157c-security.dtsi
index fb04e7d..59119c5 100644
--- a/fdts/stm32mp157c-security.dtsi
+++ b/fdts/stm32mp157c-security.dtsi
@@ -6,7 +6,7 @@
 
 / {
 	soc {
-		stgen: stgen@5C008000 {
+		stgen: stgen@5c008000 {
 			compatible = "st,stm32-stgen";
 			reg = <0x5C008000 0x1000>;
 			status = "okay";