diff --git a/gcc_nrf52-mcuboot.ld b/gcc_nrf52-mcuboot.ld
index 8bee1de4..8337099e 100644
--- a/gcc_nrf52-mcuboot.ld
+++ b/gcc_nrf52-mcuboot.ld
@@ -23,8 +23,8 @@ GROUP(-lgcc -lc -lnosys)
 MCUBOOT_SIZE = 0x8000;
 SCRATCH_SIZE = 0x1000;
 SCRATCH_OFFSET = 0x7c000;
-MCUBOOT_APP_IMAGE_HEADER_SIZE = 32;
-MCUBOOT_APP_IMAGE_TRAILER_SIZE = 432;
+MCUBOOT_APP_IMAGE_HEADER_SIZE = 0x20;
+MCUBOOT_APP_IMAGE_TRAILER_SIZE = 0x1b0;
 APP_OFFSET = MCUBOOT_SIZE + MCUBOOT_APP_IMAGE_HEADER_SIZE;
 APP_SIZE = SCRATCH_OFFSET - MCUBOOT_SIZE - MCUBOOT_APP_IMAGE_HEADER_SIZE - MCUBOOT_APP_IMAGE_TRAILER_SIZE;