diff --git a/SConstruct b/SConstruct
index b1c940a03..45cf2f876 100644
--- a/SConstruct
+++ b/SConstruct
@@ -763,7 +763,7 @@ class DXXProgram(DXXCommon):
 'main/fvi.cpp',
 'main/game.cpp',
 'main/gamecntl.cpp',
-'main/gamefont.c',
+'main/gamefont.cpp',
 'main/gamerend.c',
 'main/gamesave.c',
 'main/gameseg.c',
diff --git a/similar/main/gamefont.c b/similar/main/gamefont.cpp
similarity index 100%
rename from similar/main/gamefont.c
rename to similar/main/gamefont.cpp