diff --git a/auto/lib/md5/conf b/auto/lib/md5/conf
index 9afe5b8..f9c1ed9 100644
--- a/auto/lib/md5/conf
+++ b/auto/lib/md5/conf
@@ -1,5 +1,6 @@
 
 # Copyright (C) Igor Sysoev
+# Copyright (C) Nginx, Inc.
 
 
 if [ $MD5 != NONE ]; then
diff --git a/auto/lib/md5/make b/auto/lib/md5/make
index 60af28c..81f138a 100644
--- a/auto/lib/md5/make
+++ b/auto/lib/md5/make
@@ -1,5 +1,6 @@
 
 # Copyright (C) Igor Sysoev
+# Copyright (C) Nginx, Inc.
 
 
 case "$NGX_CC_NAME" in
diff --git a/auto/lib/md5/makefile.bcc b/auto/lib/md5/makefile.bcc
index c02ef95..eb6fb62 100644
--- a/auto/lib/md5/makefile.bcc
+++ b/auto/lib/md5/makefile.bcc
@@ -1,5 +1,6 @@
 
 # Copyright (C) Igor Sysoev
+# Copyright (C) Nginx, Inc.
 
 
 CFLAGS = -q -O2 -tWM $(CPU_OPT) -DL_ENDIAN
diff --git a/auto/lib/md5/makefile.msvc b/auto/lib/md5/makefile.msvc
index 233da0f..90d62fa 100644
--- a/auto/lib/md5/makefile.msvc
+++ b/auto/lib/md5/makefile.msvc
@@ -1,5 +1,6 @@
 
 # Copyright (C) Igor Sysoev
+# Copyright (C) Nginx, Inc.
 
 
 CFLAGS = -nologo -O2 -Ob1 -Oi -Gs $(LIBC) $(CPU_OPT) -D L_ENDIAN
diff --git a/auto/lib/md5/makefile.owc b/auto/lib/md5/makefile.owc
index c36c936..78c1e61 100644
--- a/auto/lib/md5/makefile.owc
+++ b/auto/lib/md5/makefile.owc
@@ -1,5 +1,6 @@
 
 # Copyright (C) Igor Sysoev
+# Copyright (C) Nginx, Inc.
 
 
 CFLAGS = -zq -bt=nt -bm -ot -op -oi -oe -s $(CPU_OPT)