diff --git a/ports/nrf/boards/microbit/modules/microbitconstimage.cpp b/ports/nrf/boards/microbit/modules/microbitconstimage.c
similarity index 100%
rename from ports/nrf/boards/microbit/modules/microbitconstimage.cpp
rename to ports/nrf/boards/microbit/modules/microbitconstimage.c
diff --git a/ports/nrf/boards/microbit/modules/modmicrobit.h b/ports/nrf/boards/microbit/modules/microbitconstimage.h
similarity index 100%
rename from ports/nrf/boards/microbit/modules/modmicrobit.h
rename to ports/nrf/boards/microbit/modules/microbitconstimage.h
diff --git a/ports/nrf/boards/microbit/modules/microbitdisplay.cpp b/ports/nrf/boards/microbit/modules/microbitdisplay.c
similarity index 100%
rename from ports/nrf/boards/microbit/modules/microbitdisplay.cpp
rename to ports/nrf/boards/microbit/modules/microbitdisplay.c
diff --git a/ports/nrf/boards/microbit/modules/MicroBitFont.cpp b/ports/nrf/boards/microbit/modules/microbitfont.h
similarity index 100%
rename from ports/nrf/boards/microbit/modules/MicroBitFont.cpp
rename to ports/nrf/boards/microbit/modules/microbitfont.h
diff --git a/ports/nrf/boards/microbit/modules/microbitimage.cpp b/ports/nrf/boards/microbit/modules/microbitimage.c
similarity index 100%
rename from ports/nrf/boards/microbit/modules/microbitimage.cpp
rename to ports/nrf/boards/microbit/modules/microbitimage.c
diff --git a/ports/nrf/boards/microbit/modules/modmicrobit.cpp b/ports/nrf/boards/microbit/modules/modmicrobit.c
similarity index 100%
rename from ports/nrf/boards/microbit/modules/modmicrobit.cpp
rename to ports/nrf/boards/microbit/modules/modmicrobit.c