diff --git a/drivers/staging/greybus/Makefile b/drivers/staging/greybus/Makefile
index d45a641076b9..fb0e02316b1c 100644
--- a/drivers/staging/greybus/Makefile
+++ b/drivers/staging/greybus/Makefile
@@ -29,7 +29,7 @@ gb-raw-y := raw.o
 gb-hid-y := hid.o
 gb-es2-y := es2.o
 gb-arche-y := arche-platform.o arche-apb-ctrl.o
-gb-audio-codec-y := audio-codec.o
+gb-audio-codec-y := audio_codec.o
 gb-camera-y := camera.o
 
 obj-m += greybus.o
diff --git a/drivers/staging/greybus/audio-codec.c b/drivers/staging/greybus/audio_codec.c
similarity index 100%
rename from drivers/staging/greybus/audio-codec.c
rename to drivers/staging/greybus/audio_codec.c