diff --git a/sim/mcuboot-sys/csupport/generated_dts_board.h b/sim/mcuboot-sys/csupport/devicetree.h
similarity index 76%
rename from sim/mcuboot-sys/csupport/generated_dts_board.h
rename to sim/mcuboot-sys/csupport/devicetree.h
index f5e11f8..f268640 100644
--- a/sim/mcuboot-sys/csupport/generated_dts_board.h
+++ b/sim/mcuboot-sys/csupport/devicetree.h
@@ -6,8 +6,8 @@
 
 /* This file mocks zephyr's autogenerated DT output header file */
 
-#ifndef __GENERATED_DTS_BOARD_H__
-#define __GENERATED_DTS_BOARD_H__
+#ifndef __DEVICETREE_H__
+#define __DEVICETREE_H__
 
 #define DT_FLASH_AREA_IMAGE_0_ID 1
 #define DT_FLASH_AREA_IMAGE_1_ID 2
@@ -15,4 +15,4 @@
 #define DT_FLASH_AREA_IMAGE_2_ID 4
 #define DT_FLASH_AREA_IMAGE_3_ID 5
 
-#endif /*__GENERATED_DTS_BOARD_H__*/
+#endif /*__DEVICETREE_H__*/