diff --git a/lang/cem/libcc.ansi/stdio/setvbuf.c b/lang/cem/libcc.ansi/stdio/setvbuf.c
index c6dd3dc46..2c5e769df 100644
--- a/lang/cem/libcc.ansi/stdio/setvbuf.c
+++ b/lang/cem/libcc.ansi/stdio/setvbuf.c
@@ -32,9 +32,6 @@ setvbuf(register FILE *stream, char *buf, int mode, size_t size)
 		}
 	}
 
-	if (io_testflag(stream, _IOREADING) || io_testflag(stream, _IOWRITING))
-		retval = EOF;
-
 	stream->_buf = (unsigned char *) buf;
 
 	stream->_count = 0;