diff --git a/samples/boards/stm32/power_mgmt/adc/boards/nucleo_wba52cg.overlay b/samples/boards/stm32/power_mgmt/adc/boards/nucleo_wba52cg.overlay
index 3cd6cb64bf5..f92c541e298 100644
--- a/samples/boards/stm32/power_mgmt/adc/boards/nucleo_wba52cg.overlay
+++ b/samples/boards/stm32/power_mgmt/adc/boards/nucleo_wba52cg.overlay
@@ -10,3 +10,17 @@
 		io-channels = <&adc4 8>;
 	};
 };
+
+&adc4 {
+    pinctrl-0 = <&adc4_in8_pa1>;
+    #address-cells = <1>;
+    #size-cells = <0>;
+
+    channel@8 {
+        reg = <8>;
+        zephyr,gain = "ADC_GAIN_1";
+        zephyr,reference = "ADC_REF_INTERNAL";
+        zephyr,acquisition-time = <ADC_ACQ_TIME_MAX>;
+        zephyr,resolution = <12>;
+    };
+};