diff --git a/aegisub/src/avisynth_wrap.cpp b/aegisub/src/avisynth_wrap.cpp
index 853b863e6..bd10827ba 100644
--- a/aegisub/src/avisynth_wrap.cpp
+++ b/aegisub/src/avisynth_wrap.cpp
@@ -69,17 +69,10 @@ void DoAvsTrace(const wxString &s)
 #endif
 
 
-
-/// DOCME
+// Allocate storage for and initialise static members
 int AviSynthWrapper::avs_refcount = 0;
-
-/// DOCME
 HINSTANCE AviSynthWrapper::hLib = NULL;
-
-/// DOCME
 IScriptEnvironment *AviSynthWrapper::env = NULL;
-
-/// DOCME
 wxMutex AviSynthWrapper::AviSynthMutex;
 
 
diff --git a/aegisub/src/avisynth_wrap.h b/aegisub/src/avisynth_wrap.h
index 1e7c489d4..f1034756d 100644
--- a/aegisub/src/avisynth_wrap.h
+++ b/aegisub/src/avisynth_wrap.h
@@ -45,7 +45,7 @@
 // Headers
 #include <wx/wxprec.h>
 
-#ifdef __WINDOWS__
+#ifdef WITH_AVISYNTH
 #include <windows.h>
 #include "avisynth.h"