diff --git a/SConstruct b/SConstruct
index d4a28d241..4c9297263 100644
--- a/SConstruct
+++ b/SConstruct
@@ -741,7 +741,7 @@ class DXXProgram(DXXCommon):
 	__objects_common = DXXCommon.create_lazy_object_property([{
 		'source':[os.path.join('similar', f) for f in [
 '2d/font.cpp',
-'2d/palette.c',
+'2d/palette.cpp',
 '2d/pcx.c',
 '3d/interp.c',
 'arch/sdl/digi.c',
diff --git a/similar/2d/palette.c b/similar/2d/palette.cpp
similarity index 100%
rename from similar/2d/palette.c
rename to similar/2d/palette.cpp