diff --git a/libwnck.spec b/libwnck.spec
index 125eded..0102943 100644
--- a/libwnck.spec
+++ b/libwnck.spec
@@ -20,7 +20,7 @@
 Name:           libwnck
 Version:        3.2.1
 Release:        1
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 # WARNING: After changing versions please call Re or rpmbuild to auto-update spec file:
 #%(sh %{_sourcedir}/%{name}_spec-update.sh %{_sourcedir} %{name} libwnck-1)
 %define libwnck-3_name 0
@@ -42,7 +42,7 @@ The Window Navigator Construction Kit is a library that can be used to
 write task lists, pagers, and similar GNOME programs.
 
 %package -n libwnck-3-0
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Window Navigator Construction Kit (Library Package)
 Group:          Development/Libraries/GNOME
 Provides:       %{name} = %{version}
@@ -59,7 +59,7 @@ The Window Navigator Construction Kit is a library that can be used to
 write task lists, pagers, and similar GNOME programs.
 
 %package tools
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Window Navigator Construction Kit -- Tools
 Group:          Development/Libraries/GNOME
 
@@ -70,7 +70,7 @@ write task lists, pagers, and similar GNOME programs.
 This package provides some utilities based on libwnck.
 
 %package devel
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Include Files and Libraries mandatory for Development
 Group:          Development/Libraries/GNOME
 Requires:       libwnck-3-0 = %{version}