--- a/tests/tools/check_source.sh	Mon Mar 18 12:07:49 2019 +0300
+++ b/tests/tools/check_source.sh	Mon Mar 18 12:09:41 2019 +0300
@@ -445,7 +445,7 @@
         exit 0;
     fi
 
-    py3_files=$(echo $py_files | sed 's/ [a-Z\/\.]*pyjslib.py//')
+    py3_files=$(echo $py_files | sed 's/ [[:alnum:]_\-\/.]*pyjslib.py//')
 }