diff --git a/src/menus/CMakeLists.txt b/src/menus/CMakeLists.txt
index 4e024fc55..f0d8dc4f0 100644
--- a/src/menus/CMakeLists.txt
+++ b/src/menus/CMakeLists.txt
@@ -25,7 +25,7 @@ target_sources(SRB2SDL2 PRIVATE
 	options-profiles-edit-controls.c
 	options-server-1.c
 	options-server-advanced.c
-	options-sound.c
+	options-sound.cpp
 	options-video-1.c
 	options-video-gl.c
 	options-video-modes.c
diff --git a/src/menus/options-sound.c b/src/menus/options-sound.cpp
similarity index 100%
rename from src/menus/options-sound.c
rename to src/menus/options-sound.cpp