diff --git a/libdatrie.spec b/libdatrie.spec
index 0fd4e81..549bd8c 100644
--- a/libdatrie.spec
+++ b/libdatrie.spec
@@ -20,7 +20,7 @@
 Name:           libdatrie
 Version:        0.2.4
 Release:        5
-License:        LGPLv2.1
+License:        LGPL-2.1
 Summary:        Double-Array Trie Library
 Url:            http://linux.thai.net/~thep/datrie/datrie.html
 Group:          System/Libraries
@@ -34,7 +34,7 @@ This is an implementation of double-array structure for representing
 trie, as proposed by Junichi Aoe.
 
 %package -n libdatrie1
-License:        LGPLv2.1
+License:        LGPL-2.1
 Group:          Development/Libraries/C and C++
 Summary:        Double-Array Trie Library
 
@@ -43,7 +43,7 @@ This is an implementation of double-array structure for representing
 trie, as proposed by Junichi Aoe.
 
 %package devel
-License:        LGPLv2.1
+License:        LGPL-2.1
 Group:          Development/Libraries/C and C++
 Summary:        Double-Array Trie Library (development)
 Requires:       libdatrie1 = %{version}