diff --git a/boards/st/nucleo_f103rb/nucleo_f103rb.dts b/boards/st/nucleo_f103rb/nucleo_f103rb.dts
index 1f225b41312..53b9089e554 100644
--- a/boards/st/nucleo_f103rb/nucleo_f103rb.dts
+++ b/boards/st/nucleo_f103rb/nucleo_f103rb.dts
@@ -69,6 +69,7 @@
 	ahb-prescaler = <1>;
 	apb1-prescaler = <2>;
 	apb2-prescaler = <1>;
+	adc-prescaler = <2>;
 };
 
 &usart1 {
diff --git a/boards/st/nucleo_f303k8/nucleo_f303k8.dts b/boards/st/nucleo_f303k8/nucleo_f303k8.dts
index 1090ae23ab2..efdf58a848f 100644
--- a/boards/st/nucleo_f303k8/nucleo_f303k8.dts
+++ b/boards/st/nucleo_f303k8/nucleo_f303k8.dts
@@ -63,6 +63,7 @@
 	ahb-prescaler = <1>;
 	apb1-prescaler = <2>;
 	apb2-prescaler = <1>;
+	adc12-prescaler = <0>;
 };
 
 &timers2 {
diff --git a/boards/st/nucleo_f303re/nucleo_f303re.dts b/boards/st/nucleo_f303re/nucleo_f303re.dts
index af1bea6d92a..efa840c140a 100644
--- a/boards/st/nucleo_f303re/nucleo_f303re.dts
+++ b/boards/st/nucleo_f303re/nucleo_f303re.dts
@@ -69,6 +69,8 @@
 	ahb-prescaler = <1>;
 	apb1-prescaler = <2>;
 	apb2-prescaler = <1>;
+	adc12-prescaler = <0>;
+	adc34-prescaler = <0>;
 };
 
 &usart2 {