diff --git a/appveyor_build.py b/appveyor_build.py
index ac788db59..3db4094de 100644
--- a/appveyor_build.py
+++ b/appveyor_build.py
@@ -10,6 +10,6 @@
 files = ["config.h", "version.h", "mdllex.c", "mdlparse.h", "mdlparse.c"]
 
 for f in files:
-    shutil.move("./windows/%s" % f, mcell_src)
+    shutil.move("./appveyor_windows/%s" % f, mcell_src)
 os.chdir(mcell_src)
 check_call(build_command)
diff --git a/windows/config.h b/appveyor_windows/config.h
similarity index 100%
rename from windows/config.h
rename to appveyor_windows/config.h
diff --git a/windows/mdllex.c b/appveyor_windows/mdllex.c
similarity index 100%
rename from windows/mdllex.c
rename to appveyor_windows/mdllex.c
diff --git a/windows/mdlparse.c b/appveyor_windows/mdlparse.c
similarity index 100%
rename from windows/mdlparse.c
rename to appveyor_windows/mdlparse.c
diff --git a/windows/mdlparse.h b/appveyor_windows/mdlparse.h
similarity index 100%
rename from windows/mdlparse.h
rename to appveyor_windows/mdlparse.h
diff --git a/windows/version.h b/appveyor_windows/version.h
similarity index 100%
rename from windows/version.h
rename to appveyor_windows/version.h