diff --git a/src/kernel/libroot/posix/stdio/findfp.c b/src/kernel/libroot/posix/stdio/findfp.c
index a8575fe199..bb6f55596e 100644
--- a/src/kernel/libroot/posix/stdio/findfp.c
+++ b/src/kernel/libroot/posix/stdio/findfp.c
@@ -170,6 +170,6 @@ void
 __sinit()
 {
 	/* make sure we clean up on exit */
-	__cleanup = _cleanup;		/* conservative */
+	_IO_cleanup = _cleanup;		/* conservative */
 	__sdidinit = 1;
 }
diff --git a/src/kernel/libroot/posix/stdio/local.h b/src/kernel/libroot/posix/stdio/local.h
index cab85e20c0..d32a41b435 100644
--- a/src/kernel/libroot/posix/stdio/local.h
+++ b/src/kernel/libroot/posix/stdio/local.h
@@ -48,7 +48,7 @@ fpos_t   __sseek (void *, fpos_t, int);
 int      __sclose (void *);
 void     __sinit (void);
 void     _cleanup (void);
-void     (*__cleanup) (void);
+void     (*_IO_cleanup) (void);
 void     __smakebuf (FILE *);
 int      __swhatbuf (FILE *, size_t *, int *);
 int      _fwalk (int (*)(FILE *));
diff --git a/src/kernel/libroot/posix/stdio/makebuf.c b/src/kernel/libroot/posix/stdio/makebuf.c
index 96ffb4c862..26dac438d0 100644
--- a/src/kernel/libroot/posix/stdio/makebuf.c
+++ b/src/kernel/libroot/posix/stdio/makebuf.c
@@ -68,7 +68,7 @@ __smakebuf(fp)
 		fp->_bf._size = 1;
 		return;
 	}
-	__cleanup = _cleanup;
+	_IO_cleanup = _cleanup;
 	flags |= __SMBF;
 	fp->_bf._base = fp->_p = p;
 	fp->_bf._size = size;