1 files changed, 0 insertions, 1 deletions
diff --git a/ruby.c b/ruby.c
index 5dfa252fe3..318b914b4a 100644
--- a/ruby.c
+++ b/ruby.c
@@ -2256,7 +2256,6 @@ void
 ruby_sysinit(int *argc, char ***argv)
 {
 #if defined(_WIN32)
-    void rb_w32_sysinit(int *argc, char ***argv);
     rb_w32_sysinit(argc, argv);
 #endif
     origarg.argc = *argc;