diff --git a/rMtS_multiblock.py b/rMtS_multiblock.py
index 215e77e2f1996374a49be347dbed66939ffdc80e..42466f7ac05586b05c3682363737d78ba131016e 100644
--- a/rMtS_multiblock.py
+++ b/rMtS_multiblock.py
@@ -61,9 +61,9 @@ if __name__ == '__main__':
     doSTIMULATION = expInfo['stimulation'] # Run tES
 
     # - timings
-    nDummies = 5
+    nDummies = 5 # [5]
     conditionBlockJitterRange = [9, 11]# duration of rest between condition blocks
-    nConditionBlock = 12 # number of condition blocks
+    nConditionBlock = 12 # number of condition blocks [12]
 
     trialBlockJitterRange = [5, 7] # duration of rest between trialblocks
     nTrialBlock = 3 # number of trial blocks per condition block
@@ -245,6 +245,8 @@ if __name__ == '__main__':
         wave1 = Waveform(**defWave)
         defWave['phase'] = phaseDiff
         wave2 = Waveform(**defWave)
+        initDurationWave1 = wave1.duration
+        initDurationWave2 = wave2.duration
 
     # Trigger
     doTrigger = False
@@ -376,12 +378,12 @@ if __name__ == '__main__':
                 if thisConditionBlock['frequency']: 
                     wave1.frequency = thisConditionBlock['frequency']
                     wave2.frequency = thisConditionBlock['frequency']
-                    wave1.duration = wave1.duration - thisTrialBlock['onsetTrialBlock'] # do not stimulate during first ISI_trialBlock
-                    wave2.duration = wave2.duration - thisTrialBlock['onsetTrialBlock'] # do not stimulate during first ISI_trialBlock
+                    wave1.duration = initDurationWave1 - thisTrialBlock['onsetTrialBlock'] # do not stimulate during first ISI_trialBlock
+                    wave2.duration = initDurationWave2 - thisTrialBlock['onsetTrialBlock'] # do not stimulate during first ISI_trialBlock
                     BSO.initialize()
                     BSO.loadWaveform([wave1, wave2])
                     BSO.stimulate()
-                    logging.log(level=logging.DATA, msg='Stimulation - {:.3f} - Frequency: {}'.format(SSO.clock,BSO.waves[0].frequency))
+                    logging.log(level=logging.DATA, msg='Stimulation - {:.3f} - Frequency: {} - Duration: {:.3f}'.format(SSO.clock,BSO.waves[0].frequency,BSO.waves[0].duration))
                 else:
                     logging.log(level=logging.DATA, msg='Stimulation - {:.3f} - Frequency: {}'.format(SSO.clock,0))