diff --git a/libc/stdio/stdio.cpp b/libc/stdio/stdio.cpp
index 645aefa..f18cd81 100644
--- a/libc/stdio/stdio.cpp
+++ b/libc/stdio/stdio.cpp
@@ -773,7 +773,7 @@
 char* fgets_unlocked(char* buf, int n, FILE* fp) {
   if (n <= 0) __fortify_fatal("fgets: buffer size %d <= 0", n);
 
-  _SET_ORIENTATION(fp, -1);
+  _SET_ORIENTATION(fp, ORIENT_BYTES);
 
   char* s = buf;
   n--; // Leave space for NUL.
@@ -903,7 +903,7 @@
     errno = EBADF;
     return EOF;
   }
-  _SET_ORIENTATION(fp, -1);
+  _SET_ORIENTATION(fp, ORIENT_BYTES);
   if (--fp->_w >= 0 || (fp->_w >= fp->_lbfsize && c != '\n')) {
     return (*fp->_p++ = c);
   }
@@ -1098,7 +1098,7 @@
   size_t total = desired_total;
   if (total == 0) return 0;
 
-  _SET_ORIENTATION(fp, -1);
+  _SET_ORIENTATION(fp, ORIENT_BYTES);
 
   // TODO: how can this ever happen?!
   if (fp->_r < 0) fp->_r = 0;
@@ -1165,7 +1165,7 @@
   __siov iov = { .iov_base = const_cast<void*>(buf), .iov_len = n };
   __suio uio = { .uio_iov = &iov, .uio_iovcnt = 1, .uio_resid = n };
 
-  _SET_ORIENTATION(fp, -1);
+  _SET_ORIENTATION(fp, ORIENT_BYTES);
 
   // The usual case is success (__sfvwrite returns 0); skip the divide if this happens,
   // since divides are generally slow.