diff --git a/debian/copyright b/debian/copyright
index 3ff5fbe11..d5df29f3e 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -90,7 +90,7 @@ License: MIT-like
 Files: Utilities/cmzlib/*
 Copyright: 1995-2005 Jean-loup Gailly
   1995-2005 Mark Adler
-License: zlib/libpng FIXME
+License: zlib
 
 License: BSD-3-clause
  Copyright (c) 2002 Kitware, Inc., Insight Consortium
@@ -412,4 +412,21 @@ License: BSD-2-clause
   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-  POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
+  POSSIBILITY OF SUCH DAMAGE.
+
+License: zlib
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+  .
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+  .
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.