diff --git a/src/Python/SIP/Bindings.cpp b/src/Python/SIP/Bindings.cpp
index 7c2d19b7e..0f6ab5a45 100644
--- a/src/Python/SIP/Bindings.cpp
+++ b/src/Python/SIP/Bindings.cpp
@@ -692,7 +692,7 @@ Bindings::activityXdataSeries(QString name, QString series, PyObject* activity)
         pCount++;
     }
 
-    PythonDataSeries* ds = new PythonDataSeries(name, pCount);
+    PythonDataSeries* ds = new PythonDataSeries(QString("%1_%2").arg(name).arg(series), pCount);
 
     int idx = 0;
     foreach(XDataPoint* p, xds->datapoints) {