diff --git a/potrace.changes b/potrace.changes
index 758b848..3703615 100644
--- a/potrace.changes
+++ b/potrace.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sun Nov 27 06:45:03 UTC 2011 - coolo@suse.com
+
+- add libtool as buildrequire to avoid implicit dependency
+
 -------------------------------------------------------------------
 Sat Aug 20 16:38:22 UTC 2011 - mrdocs@opensuse.org
 - update to 1.10
diff --git a/potrace.spec b/potrace.spec
index 3bc0937..c1a4d62 100644
--- a/potrace.spec
+++ b/potrace.spec
@@ -19,13 +19,13 @@
 
 Name:           potrace
 Version:        1.10
-Release:        0
-License:        GPLv2+
+Release:        1
+License:        GPL-2.0+
 Summary:        Utility for Tracing a Bitmap to Scalable Outline Image
 Url:            http://potrace.sourceforge.net/
 Group:          Productivity/Graphics/Convertors
 Source:         %{name}-%{version}.tar.gz
-BuildRequires:  zlib-devel
+BuildRequires:  libtool zlib-devel
 Provides:       bitmap_tracing
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build