diff --git a/gtkmm2.spec b/gtkmm2.spec
index ea725ab..d8d3213 100644
--- a/gtkmm2.spec
+++ b/gtkmm2.spec
@@ -25,7 +25,7 @@ BuildRequires:  gtk2-devel >= 2.15.1
 Version:        2.24.2
 Release:        1
 Group:          System/Libraries
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        C++ Interface for GTK2 (a GUI Library for X)
 Url:            http://www.gtkmm.org/
 Source:         http://download.gnome.org/sources/gtkmm/2.24/%{_name}-%{version}.tar.bz2
@@ -38,7 +38,7 @@ inheritance, and a comprehensive set of widget classes that can be
 freely combined to quickly create complex user interfaces.
 
 %package -n libgtkmm-2_4-1
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Group:          System/Libraries
 Summary:        C++ Interface for GTK2 (a GUI library for X)
 Provides:       gtkmm2 = %{version}
@@ -53,7 +53,7 @@ inheritance and a comprehensive set of widget classes that can be
 freely combined to quickly create complex user interfaces.
 
 %package devel
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Group:          Development/Libraries/C and C++
 Summary:        C++ Interface for GTK2 (a GUI library for X)
 Requires:       libgtkmm-2_4-1 = %{version}