diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 05b097b0..904260ba 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -891,7 +891,7 @@ add_custom_command(TARGET ${EXECUTABLE_NAME}
 # Build binary intended to be used by bootloader
 set(EXECUTABLE_MCUBOOT_NAME "pinetime-mcuboot-app")
 set(EXECUTABLE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
-set(IMAGE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(IMAGE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.hex)
 set(DFU_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
 set(NRF5_LINKER_SCRIPT_MCUBOOT "${CMAKE_SOURCE_DIR}/gcc_nrf52-mcuboot.ld")
 add_executable(${EXECUTABLE_MCUBOOT_NAME} ${SOURCE_FILES})
@@ -915,7 +915,7 @@ add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_NAME}
         COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_MCUBOOT_FILE_NAME}.out
         COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_FILE_NAME}.bin"
         COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_FILE_NAME}.hex"
-        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_FILE_NAME}.bin ${IMAGE_MCUBOOT_FILE_NAME}
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_FILE_NAME}.hex ${IMAGE_MCUBOOT_FILE_NAME}
         COMMENT "post build steps for ${EXECUTABLE_MCUBOOT_FILE_NAME}"
         )
 
@@ -958,7 +958,7 @@ add_custom_command(TARGET ${EXECUTABLE_RECOVERY_NAME}
 # InfiniTime recovery firmware (mcuboot)
 set(EXECUTABLE_RECOVERY_MCUBOOT_NAME "pinetime-mcuboot-recovery")
 set(EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
-set(IMAGE_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(IMAGE_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.hex)
 set(DFU_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
 add_executable(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} ${RECOVERY_SOURCE_FILES})
 target_link_libraries(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} nimble nrf-sdk littlefs QCBOR infinitime_fonts)
@@ -981,9 +981,10 @@ add_custom_command(TARGET ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}
         POST_BUILD
         COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out
         COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.bin"
-        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_RECOVERYY_MCUBOOT_FILE_NAME}.hex"
-        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.bin ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME}
-        COMMAND python3 ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME} recoveryImage > recoveryImage.h
+        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.hex"
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.hex ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME}
+        COMMAND ${CMAKE_OBJCOPY} -I ihex -O binary ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME} "${IMAGE_RECOVERY_MCUBOOT_FILE_NAME}.bin"
+        COMMAND python3 ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME}.bin recoveryImage > recoveryImage.h
         COMMENT "post build steps for ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}"
         )
 
@@ -1029,7 +1030,7 @@ add_custom_command(TARGET ${EXECUTABLE_RECOVERYLOADER_NAME}
 # Build binary that writes the recovery image (MCUBoot version)
 set(EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME "pinetime-mcuboot-recovery-loader")
 set(EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
-set(IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.hex)
 set(DFU_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
 add_executable(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} ${RECOVERYLOADER_SOURCE_FILES})
 target_link_libraries(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} nrf-sdk QCBOR infinitime_fonts)
@@ -1056,8 +1057,9 @@ add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}
         COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out
         COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin"
         COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.hex"
-        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME}
-        COMMAND python3 ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME} recoveryLoaderImage > recoveryLoaderImage.h
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.hex ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME}
+        COMMAND ${CMAKE_OBJCOPY} -I ihex -O binary ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME} "${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin"
+        COMMAND python3 ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin recoveryLoaderImage > recoveryLoaderImage.h
         COMMENT "post build steps for ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}"
         )