diff --git a/SConstruct b/SConstruct
index 2bace827f..1da22c4cd 100644
--- a/SConstruct
+++ b/SConstruct
@@ -790,7 +790,7 @@ class DXXProgram(DXXCommon):
 'main/player.cpp',
 'main/playsave.cpp',
 'main/polyobj.cpp',
-'main/powerup.c',
+'main/powerup.cpp',
 'main/render.c',
 'main/robot.c',
 'main/scores.c',
diff --git a/similar/main/powerup.c b/similar/main/powerup.cpp
similarity index 100%
rename from similar/main/powerup.c
rename to similar/main/powerup.cpp