--- a/targets/__init__.py	Wed Aug 16 17:27:58 2017 +0300
+++ b/targets/__init__.py	Thu Aug 17 09:55:39 2017 +0300
@@ -74,7 +74,7 @@
     # Get all xsd targets
     for targetname, nfo in targets.iteritems():
         xsd_string = open(nfo["xsd"]).read()
-        targetchoices +=  xsd_string % DictXSD_toolchain
+        targetchoices += xsd_string % DictXSD_toolchain
 
     return targetchoices