diff --git a/src/node/db/SessionManager.js b/src/node/db/SessionManager.js
index 67d3e3816..9161205d7 100644
--- a/src/node/db/SessionManager.js
+++ b/src/node/db/SessionManager.js
@@ -18,13 +18,11 @@
  * limitations under the License.
  */
 
-var ERR = require("async-stacktrace");
 var customError = require("../utils/customError");
 var randomString = require("../utils/randomstring");
 var db = require("./DB");
 var groupManager = require("./GroupManager");
 var authorManager = require("./AuthorManager");
-const thenify = require("thenify").withCallback;
 
 exports.doesSessionExist = async function(sessionID)
 {
@@ -120,23 +118,19 @@ exports.createSession = async function(groupID, authorID, validUntil)
   return { sessionID };
 }
 
-// @TODO once external dependencies are using Promises
-exports.getSessionInfo = thenify(function(sessionID, callback)
+exports.getSessionInfo = async function(sessionID)
 {
   // check if the database entry of this session exists
-  db.get("session:" + sessionID, function (err, session)
-  {
-    if(ERR(err, callback)) return;
+  let session = await db.get("session:" + sessionID);
 
-    if (session == null) {
-      // session does not exist
-      callback(new customError("sessionID does not exist", "apierror"))
-    } else {
-      // everything is fine, return the sessioninfos
-      callback(null, session);
-    }
-  });
-});
+  if (session == null) {
+    // session does not exist
+    throw new customError("sessionID does not exist", "apierror");
+  }
+
+  // everything is fine, return the sessioninfos
+  return session;
+}
 
 /**
  * Deletes a session
@@ -199,7 +193,7 @@ exports.listSessionsOfAuthor = async function(authorID)
 
 // this function is basically the code listSessionsOfAuthor and listSessionsOfGroup has in common
 // required to return null rather than an empty object if there are none
-async function listSessionsWithDBKey(dbkey, callback)
+async function listSessionsWithDBKey(dbkey)
 {
   // get the group2sessions entry
   let sessionObject = await db.get(dbkey);