diff --git a/qcom/shima-ion.dtsi b/qcom/shima-ion.dtsi
index 492860866012..cd7fea705a18 100644
--- a/qcom/shima-ion.dtsi
+++ b/qcom/shima-ion.dtsi
@@ -17,7 +17,7 @@
 		};
 
 		qcom,ion-heap@10 { /* SECURE DISPLAY HEAP */
-			reg = <10>;
+			reg = <ION_SECURE_DISPLAY_HEAP_ID>;
 			memory-region = <&secure_display_memory>;
 			qcom,ion-heap-type = "HYP_CMA";
 		};