diff --git a/xz.spec b/xz.spec
index 2303f4b..882a238 100644
--- a/xz.spec
+++ b/xz.spec
@@ -22,7 +22,7 @@ Summary:        A Program for Compressing Files
 Version:        5.0.3
 Release:        2
 Group:          Productivity/Archiving/Compression
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Url:            http://tukaani.org/lzma/
 Source:         http://tukaani.org/xz/%{name}-%{version}.tar.bz2
 Source2:        baselibs.conf
@@ -65,7 +65,7 @@ The xz command is a very powerful program for compressing files.
 %{?lang_package}
 
 %package -n liblzma5
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        LZMA library
 Group:          System/Libraries
 
@@ -73,7 +73,7 @@ Group:          System/Libraries
 Library for encoding/decoding LZMA files.
 
 %package devel
-License:        LGPLv2.1+
+License:        LGPL-2.1+
 Summary:        Development package for the LZMA library
 Group:          Development/Libraries/C and C++
 Requires:       liblzma5 = %{version}