diff --git a/cogl/Makefile.am b/cogl/Makefile.am
index 3cee5fad0..c432c3fe2 100644
--- a/cogl/Makefile.am
+++ b/cogl/Makefile.am
@@ -342,14 +342,8 @@ if SUPPORT_EGL_PLATFORM_GDL
 cogl_sources_c += \
        $(srcdir)/winsys/cogl-winsys-egl.c
 endif
-if SUPPORT_WIN32
+if SUPPORT_STUB
 cogl_sources_c += \
-       $(srcdir)/winsys/cogl-winsys-win32.c \
-       $(srcdir)/winsys/cogl-winsys-stub.c
-endif
-if SUPPORT_OSX
-cogl_sources_c += \
-       $(srcdir)/winsys/cogl-winsys-osx.c \
        $(srcdir)/winsys/cogl-winsys-stub.c
 endif
 
diff --git a/cogl/winsys/cogl-winsys-osx.c b/cogl/winsys/cogl-winsys-osx.c
deleted file mode 100644
index 9c937e4bc..000000000
--- a/cogl/winsys/cogl-winsys-osx.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Cogl
- *
- * An object oriented GL/GLES Abstraction/Utility Layer
- *
- * Copyright (C) 2007,2008,2009 Intel Corporation.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- *
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "cogl.h"
-
-CoglFuncPtr
-_cogl_winsys_get_proc_address (const char *name)
-{
-  return NULL;
-}
-
diff --git a/cogl/winsys/cogl-winsys-stub.c b/cogl/winsys/cogl-winsys-stub.c
index 576cb5f13..a45cbdf5b 100644
--- a/cogl/winsys/cogl-winsys-stub.c
+++ b/cogl/winsys/cogl-winsys-stub.c
@@ -32,6 +32,11 @@
  * calls into the winsys layer with #ifdef COGL_HAS_FULL_WINSYS
  */
 
+CoglFuncPtr
+_cogl_winsys_get_proc_address (const char *name)
+{
+  return NULL;
+}
 
 void
 _cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
diff --git a/cogl/winsys/cogl-winsys-win32.c b/cogl/winsys/cogl-winsys-win32.c
deleted file mode 100644
index 7088fa42e..000000000
--- a/cogl/winsys/cogl-winsys-win32.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Cogl
- *
- * An object oriented GL/GLES Abstraction/Utility Layer
- *
- * Copyright (C) 2007,2008,2009 Intel Corporation.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- *
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "cogl.h"
-
-CoglFuncPtr
-_cogl_winsys_get_proc_address (const char *name)
-{
-  return (CoglFuncPtr) wglGetProcAddress ((LPCSTR) name);
-}
-
diff --git a/configure.ac b/configure.ac
index 304d8b01f..c8006ac54 100644
--- a/configure.ac
+++ b/configure.ac
@@ -399,6 +399,7 @@ AS_IF([test "x$enable_stub_winsys" = "xyes"],
         GL_WINSYS_APIS="$GL_WINSYS_APIS stub"
         ALLOW_GLX=no
       ])
+AM_CONDITIONAL(SUPPORT_STUB, [test "x$enable_stub_winsys" = "xyes"])
 
 AC_ARG_ENABLE(
   [glx],
@@ -564,11 +565,6 @@ AM_CONDITIONAL(SUPPORT_XLIB, [test "x$SUPPORT_XLIB" = "xyes"])
 
 AM_CONDITIONAL(COGL_STANDALONE_BUILD, [true])
 
-AM_CONDITIONAL(SUPPORT_OSX, [false])
-AM_CONDITIONAL(SUPPORT_WIN32, [false])
-AM_CONDITIONAL(SUPPORT_WAYLAND, [false])
-
-
 dnl ================================================================
 dnl Compiler stuff.
 dnl ================================================================