diff --git a/bluepyefe/reader.py b/bluepyefe/reader.py
index 5dd2c6a..eef29d8 100644
--- a/bluepyefe/reader.py
+++ b/bluepyefe/reader.py
@@ -208,12 +208,12 @@ def csv_lccr_reader(in_data):
         in_data (dict): of the format
         {
             'filepath': "./XXX.txt",
-            'dt': 1
+            'dt': 1,
             'ton': 2000,
             'toff': 2500,
             'ljp': 14.0,
             'amplitudes': [10 -10 20 -20 30 -30 40 -40 50 -50],
-            'hypamp': -0.2
+            'hypamp': -0.2,
             'remove_last_100ms': True,
             'v_unit': 'mV',
             't_unit': 'ms',
@@ -265,8 +265,8 @@ def csv_lccr_reader(in_data):
     for amplitude, voltage in zip(amplitudes, voltages):
         current = numpy.zeros_like(voltage)
         ion, ioff = int(ton / dt), int(toff / dt)
-        current[ion:ioff] = amplitude
-
+        current[:] = hypamp
+        current[ion:ioff] = [amplitude + hypamp]
         trace_data = {
             "filename": os.path.basename(in_data['filepath']),
             "current": current,