diff --git a/python/python-rest/resources/messages/PythonRestBundle.properties b/python/python-rest/resources/messages/PythonRestBundle.properties
index 74ce20411279..441a98cb6cb9 100644
--- a/python/python-rest/resources/messages/PythonRestBundle.properties
+++ b/python/python-rest/resources/messages/PythonRestBundle.properties
@@ -1,7 +1,7 @@
-python.rest.specify.input.directory.name=Please specify input directory name.
-python.rest.specify.output.directory.name=Please specify output directory name.
+python.rest.specify.input.directory.name=Please specify an input directory name.
+python.rest.specify.output.directory.name=Please specify an output directory name.
 python.rest.no.sdk.specified=No sdk specified
-python.rest.specify.input.file.name=Please specify input file name.
+python.rest.specify.input.file.name=Please specify an input file name.
 python.rest.inspections.role.ignore.roles=Ignore Roles
 python.rest.inspection.message.not.defined.role=Not defined role ''{0}''
 python.rest.docutils.run.cfg.default.name=Docutils Task in {0}