Index: wflow-py/wflow/wf_DynamicFramework.py
===================================================================
diff -u -ra102d31a70edb76290d7a7ec392483e23c948286 -r1ac9ad97bb774c2cec0df8fbe1a4b25dbbf23151
--- wflow-py/wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision a102d31a70edb76290d7a7ec392483e23c948286)
+++ wflow-py/wflow/wf_DynamicFramework.py	(.../wf_DynamicFramework.py)	(revision 1ac9ad97bb774c2cec0df8fbe1a4b25dbbf23151)
@@ -687,7 +687,7 @@
             self._userModel().timestepsecs = self.timestepsecs
             duration = self.datetime_laststep - self.datetime_firststep
             nrseconds = duration.total_seconds()
-            self._userModel()._setNrTimeSteps(int(nrseconds / self.timestepsecs) + 1)
+            self._userModel()._setNrTimeSteps(int(nrseconds / self.timestepsecs))
             self._d_firstTimestep = 1
             self._userModel()._setFirstTimeStep(self._d_firstTimestep)
             self._d_lastTimestep = int(nrseconds / self.timestepsecs)