diff --git a/License.txt b/License.txt
new file mode 100644
index 00000000..cd24cb86
--- /dev/null
+++ b/License.txt
@@ -0,0 +1,25 @@
+Version: MPL 1.1/GPL 2.0/LGPL 2.1
+
+The contents of this file are subject to the Mozilla Public License Version
+1.1 (the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+http://www.mozilla.org/MPL/
+
+Software distributed under the License is distributed on an "AS IS" basis,
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+for the specific language governing rights and limitations under the
+License.
+
+(c) 2006-2008: Martin Stubenschrott <stubenschrott@gmx.net>
+
+Alternatively, the contents of this file may be used under the terms of
+either the GNU General Public License Version 2 or later (the "GPL"), or
+the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+in which case the provisions of the GPL or the LGPL are applicable instead
+of those above. If you wish to allow use of your version of this file only
+under the terms of either the GPL or the LGPL, and not to allow others to
+use your version of this file under the terms of the MPL, indicate your
+decision by deleting the provisions above and replace them with the notice
+and other provisions required by the GPL or the LGPL. If you do not delete
+the provisions above, a recipient may use your version of this file under
+the terms of any one of the MPL, the GPL or the LGPL.
diff --git a/Makefile.common b/Makefile.common
index 4020bf20..cf48fc30 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -27,7 +27,7 @@ JAR_BIN_FILES = ${shell find content skin	\
 JAR_FILES     = ${JAR_BIN_FILES} ${JAR_TXT_FILES} ${DOC_FILES}
 JAR           = chrome/${NAME}.jar
 
-XPI_TXT_FILES = install.rdf chrome.manifest TODO AUTHORS Donators NEWS
+XPI_TXT_FILES = install.rdf chrome.manifest TODO AUTHORS Donators NEWS License.txt
 XPI_DIRS      = $(foreach f,${XPI_FILES},$(dir $f))
 XPI_BIN_FILES = ${JAR} Makefile.common Makefile
 XPI_FILES     = ${XPI_BIN_FILES} ${XPI_TXT_FILES}