1 files changed, 1 insertions, 1 deletions
diff --git a/load.c b/load.c
index 38b26881ce..f0f7ac6cef 100644
--- a/load.c
+++ b/load.c
@@ -1060,7 +1060,7 @@ rb_ext_ractor_safe(bool flag)
     GET_THREAD()->ext_config.ractor_safe = flag;
 }
 
-#if 1
+#ifdef __sun
 static VALUE
 required_feature__realpath(VALUE path)
 {