diff --git a/physiological_data/lib/biosignals.py b/physiological_data/lib/biosignals.py
index 5cd9f270..12968b67 100644
--- a/physiological_data/lib/biosignals.py
+++ b/physiological_data/lib/biosignals.py
@@ -8,7 +8,6 @@
 import biosignalsnotebooks as bsnb
 import abc
 
-
 END_BASELINE = "End of Baseline"
 BEGIN_BASELINE = "Begin of Baseline"
 N_BACK = "N-back"
diff --git a/physiological_data/lib/novainstrumentation/peakdelta.py b/physiological_data/lib/novainstrumentation/peakdelta.py
index b24c20a2..93a460ab 100644
--- a/physiological_data/lib/novainstrumentation/peakdelta.py
+++ b/physiological_data/lib/novainstrumentation/peakdelta.py
@@ -9,7 +9,6 @@
 
 from numpy import NaN, Inf, arange, isscalar, array, asarray
 
-
 ##############################################################################
 ########################### Peaks Detection ##################################
 ##############################################################################