1 files changed, 1 insertions, 1 deletions
diff --git a/io.c b/io.c
index bd2a9bba41..1085e81c54 100644
--- a/io.c
+++ b/io.c
@@ -1005,7 +1005,7 @@ io_fread(ptr, len, fptr)
 			clearerr(fptr->f);
 		    }
                     saved_errno = errno;
-                    rb_warn("nonblocking IO#read is obsolete; use IO#readpartial or IO#sysread");
+                    rb_warning("nonblocking IO#read is obsolete; use IO#readpartial or IO#sysread");
                     errno = saved_errno;
 		}
 		if (len == n) return 0;