1 files changed, 1 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index 401c0fadf8..5802f0a945 100644
--- a/gc.c
+++ b/gc.c
@@ -35,7 +35,7 @@
 #endif
 
 void re_free_registers _((struct re_registers*));
-void rb_io_fptr_finalize _((struct OpenFile*));
+void rb_io_fptr_finalize _((struct rb_io_t*));
 
 #define rb_setjmp(env) RUBY_SETJMP(env)
 #define rb_jmp_buf rb_jmpbuf_t