diff --git a/base/steer/FairRunOnline.h b/base/steer/FairRunOnline.h
index 7e5f749d3c..a8e89560dc 100644
--- a/base/steer/FairRunOnline.h
+++ b/base/steer/FairRunOnline.h
@@ -77,6 +77,9 @@ class FairRunOnline : public FairRun
     /** Write last data to file, close input and output **/
     void Finish();
 
+    /** Get a pointer to the attached FairSource **/
+    FairSource* GetSource() { return fSource; }
+
   private:
 
     Bool_t fAutomaticFinish;