diff --git a/SConstruct b/SConstruct
index fd8ca60fc..999246432 100644
--- a/SConstruct
+++ b/SConstruct
@@ -794,7 +794,7 @@ class DXXProgram(DXXCommon):
 'main/render.cpp',
 'main/robot.cpp',
 'main/scores.cpp',
-'main/slew.c',
+'main/slew.cpp',
 'main/songs.c',
 'main/state.c',
 'main/switch.c',
diff --git a/similar/main/slew.c b/similar/main/slew.cpp
similarity index 100%
rename from similar/main/slew.c
rename to similar/main/slew.cpp