diff -r 0de89da92ee0 -r 845ca626db09 plcopen/structures.py
--- a/plcopen/structures.py	Wed Aug 16 17:27:58 2017 +0300
+++ b/plcopen/structures.py	Thu Aug 17 09:55:39 2017 +0300
@@ -233,11 +233,11 @@
                             decl_tpl = Function_decl["outputs"][0]
                             Function_decl["outputs"] = [(decl_tpl[0], outype,  decl_tpl[2])]
                             if funcdeclname_orig.endswith('*'):
-                                funcdeclout =  funcdeclin + '_' + outype
+                                funcdeclout = funcdeclin + '_' + outype
                             else:
-                                funcdeclout =  funcdeclin
+                                funcdeclout = funcdeclin
                         else:
-                            funcdeclout =  funcdeclin
+                            funcdeclout = funcdeclin
                         Function_decl["name"] = funcdeclout
 
                         # apply filter given in "filter" column