diff --git a/lib/srfi/98/env.c b/lib/srfi/98/env.c
index e583ab70..ae2ceb4c 100644
--- a/lib/srfi/98/env.c
+++ b/lib/srfi/98/env.c
@@ -5,11 +5,9 @@
 #ifdef __APPLE__
 #include <crt_externs.h>
 #define environ (*_NSGetEnviron())
-#else
-#ifndef PLAN9
+#elif !defined(_WIN32) && !defined(PLAN9)
 extern char **environ;
 #endif
-#endif
 
 #include <chibi/eval.h>