diff --git a/aiida_kkr/calculations/kkr.py b/aiida_kkr/calculations/kkr.py
index 6f32ab36..0a141f80 100644
--- a/aiida_kkr/calculations/kkr.py
+++ b/aiida_kkr/calculations/kkr.py
@@ -300,7 +300,7 @@ def prepare_for_submission(self, tempfolder):
             tempr = parameters.get_dict().get('TEMPR')
             if tempr is None or tempr>100.:
                 change_values.append(['TEMPR', 50.])
-            N1 = parameters.get_dict().get('TEMPR')
+            N1 = parameters.get_dict().get('NPT1')
             if N1 is None or N1>0:
                 change_values.append(['NPT1', 0])
             N2 = parameters.get_dict().get('NPT2')