diff --git a/crc/scripts/ldap.py b/crc/scripts/ldap.py
index 577d4a75..2e7d1e6c 100644
--- a/crc/scripts/ldap.py
+++ b/crc/scripts/ldap.py
@@ -1,19 +1,24 @@
 import copy
 
+from flask import g
+
 from crc import app
 from crc.api.common import ApiError
 from crc.scripts.script import Script
 from crc.services.ldap_service import LdapService
+from crc.services.user_service import UserService
 
 
 class Ldap(Script):
     """This Script allows to be introduced as part of a workflow and called from there, taking
-    a UID (or several) as input and looking it up through LDAP to return the person's details """
+    a UID (or several) as input and looking it up through LDAP to return the person's details.
+    If no user id is specified, returns information about the current user."""
 
     def get_description(self):
         return """
 Attempts to create a dictionary with person details, using the
-provided argument (a UID) and look it up through LDAP.
+provided argument (a UID) and look it up through LDAP.  If no UID is
+provided, then returns information about the current user.
 
 Examples:
 supervisor_info = ldap(supervisor_uid)   // Sets the supervisor information to ldap details for the given uid.
@@ -26,13 +31,15 @@ supervisor_info = ldap(supervisor_uid)   // Sets the supervisor information to l
         return self.set_users_info_in_task(task, args)
 
     def set_users_info_in_task(self, task, args):
-        if len(args) != 1:
-            raise ApiError(code="missing_argument",
-                           message="Ldap takes a single argument, the "
-                                   "UID for the person we want to look up")
-        uid = args[0]
-        user_info_dict = {}
-
+        if len(args) > 1:
+            raise ApiError(code="invalid_argument",
+                           message="Ldap takes at most one argument, the "
+                                   "UID for the person we want to look up.")
+        if len(args) < 1:
+            if UserService.has_user():
+               uid = UserService.current_user().uid
+        else:
+            uid = args[0]
         user_info = LdapService.user_info(uid)
         user_info_dict = {
             "display_name": user_info.display_name,
diff --git a/tests/ldap/test_ldap_lookup_script.py b/tests/ldap/test_ldap_lookup_script.py
index 0a88a899..0f8f48b1 100644
--- a/tests/ldap/test_ldap_lookup_script.py
+++ b/tests/ldap/test_ldap_lookup_script.py
@@ -1,9 +1,12 @@
+from flask import g
+
 from tests.base_test import BaseTest
 
+from crc import db
+from crc.models.user import UserModel
 from crc.services.workflow_processor import WorkflowProcessor
 from crc.scripts.ldap import Ldap
 from crc.api.common import ApiError
-from crc import db, mail
 
 
 class TestLdapLookupScript(BaseTest):
@@ -44,6 +47,19 @@ class TestLdapLookupScript(BaseTest):
         with(self.assertRaises(ApiError)):
             user_details = script.do_task(task, workflow.study_id, workflow.id, "PIComputingID")
 
+    def test_get_current_user_details(self):
+        self.load_example_data()
+        self.create_reference_document()
+        workflow = self.create_workflow('empty_workflow')
+        processor = WorkflowProcessor(workflow)
+        task = processor.next_task()
+
+        script = Ldap()
+        g.user = db.session.query(UserModel).filter(UserModel.uid=='dhf8r').first()
+        user_details = script.do_task(task, workflow.study_id, workflow.id)
+        self.assertEqual(user_details['display_name'], 'Dan Funk')
+
+
 
     def test_bpmn_task_receives_user_details(self):
         workflow = self.create_workflow('ldap_replace')