diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
index febc1ad..4400992 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
@@ -1,6 +1,4 @@
-/*-
- * SPDX-License-Identifier: BSD-4-Clause
- *
+/*
  * Copyright (c) 1985, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -35,7 +33,7 @@
 
 /* @(#)exp.c	8.1 (Berkeley) 6/4/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_exp.c 325966 2017-11-18 14:26:50Z pfg $");
+__FBSDID("$FreeBSD$");
 
 
 /* EXP(X)
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
index 8102226..5a4b964 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
@@ -1,6 +1,4 @@
-/*-
- * SPDX-License-Identifier: BSD-4-Clause
- *
+/*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -35,9 +33,10 @@
 
 /* @(#)log.c	8.2 (Berkeley) 11/30/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_log.c 326670 2017-12-07 20:41:23Z dim $");
+__FBSDID("$FreeBSD$");
 
 #include <math.h>
+#include <errno.h>
 
 #include "mathimpl.h"
 
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
index e530649..1d0af44 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
@@ -1,6 +1,4 @@
 /*-
- * SPDX-License-Identifier: BSD-4-Clause
- *
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -35,7 +33,7 @@
 
 /* @(#)gamma.c	8.1 (Berkeley) 6/4/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_tgamma.c 325966 2017-11-18 14:26:50Z pfg $");
+__FBSDID("$FreeBSD$");
 
 /*
  * This code by P. McIlroy, Oct 1992;
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
index e38ea4f..04a4b6e 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
@@ -1,6 +1,4 @@
-/*-
- * SPDX-License-Identifier: BSD-4-Clause
- *
+/*
  * Copyright (c) 1988, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -33,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mathimpl.h	8.1 (Berkeley) 6/4/93
- * $FreeBSD: head/lib/msun/bsdsrc/mathimpl.h 325966 2017-11-18 14:26:50Z pfg $
+ * $FreeBSD$
  */
 
 #ifndef _MATHIMPL_H_