diff --git a/CMakeLists.txt b/CMakeLists.txt
index 72d9e28df728c1..fa68f9f3758c66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1719,7 +1719,18 @@ endif()
 
 # Generate and use MCUboot related artifacts as needed.
 if(CONFIG_BOOTLOADER_MCUBOOT)
-  include(${CMAKE_CURRENT_LIST_DIR}/cmake/mcuboot.cmake)
+  get_target_property(signing_script zephyr_property_target SIGNING_SCRIPT)
+  if(NOT signing_script)
+    set_target_properties(zephyr_property_target PROPERTIES SIGNING_SCRIPT ${CMAKE_CURRENT_LIST_DIR}/cmake/mcuboot.cmake)
+  endif()
+endif()
+
+# Include signing script, if set
+get_target_property(signing_script zephyr_property_target SIGNING_SCRIPT)
+if(signing_script)
+  message(STATUS "Including signing script: ${signing_script}")
+
+  include(${signing_script})
 endif()
 
 # Generate USB-C VIF policies in XML format