diff --git a/gui/Sconscript b/gui/Sconscript
index f0c5a171..79d29955 100644
--- a/gui/Sconscript
+++ b/gui/Sconscript
@@ -4,5 +4,5 @@ Import("env")
 env.UsePackage("gtk+-3.0")
 env.UsePackage("gmodule-export-2.0");
 
-res = Glob("*.c") + Glob("*.cpp")
+res = Glob("*.c")
 Return("res")
diff --git a/gui/ocarina.cpp b/gui/ocarina.c
similarity index 99%
rename from gui/ocarina.cpp
rename to gui/ocarina.c
index 9686cdff..df5a7ba8 100644
--- a/gui/ocarina.cpp
+++ b/gui/ocarina.c
@@ -1,7 +1,6 @@
 /*
  * Copyright 2014 (c) Anna Schumaker.
  */
-extern "C" {
 #include <core/core.h>
 #include <core/idle.h>
 #include <gui/audio.h>
@@ -14,7 +13,6 @@ extern "C" {
 #include <gui/tempq.h>
 #include <gui/view.h>
 #include <gui/window.h>
-}
 
 #define OCARINA_FLAGS (G_APPLICATION_FLAGS_NONE)