diff --git a/micropython/modules/picographics/micropython.cmake b/micropython/modules/picographics/micropython.cmake
index e8cf8b39..31d8e764 100644
--- a/micropython/modules/picographics/micropython.cmake
+++ b/micropython/modules/picographics/micropython.cmake
@@ -18,6 +18,7 @@ target_sources(usermod_${MOD_NAME} INTERFACE
     ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_graphics/pico_graphics_pen_p8.cpp
     ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_graphics/pico_graphics_pen_rgb332.cpp
     ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_graphics/pico_graphics_pen_rgb565.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_graphics/pico_graphics_pen_rgb888.cpp
     ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_graphics/types.cpp
 )