diff --git a/wavinfo/__main__.py b/wavinfo/__main__.py
index 74d06e5..5dc1de9 100644
--- a/wavinfo/__main__.py
+++ b/wavinfo/__main__.py
@@ -8,6 +8,7 @@ import json
 from enum import Enum
 from base64 import b64encode
 
+
 class MyJSONEncoder(json.JSONEncoder):
     def default(self, o):
         if isinstance(o, Enum):
@@ -57,7 +58,7 @@ def main():
                     'run_date': datetime.datetime.now().isoformat(),
                     'application': "wavinfo " + __version__,
                     'scopes': {}
-                    }
+                }
                 for scope, name, value in this_file.walk():
                     if scope not in ret_dict['scopes'].keys():
                         ret_dict['scopes'][scope] = {}
diff --git a/wavinfo/wave_reader.py b/wavinfo/wave_reader.py
index 5cb9ff6..ca41c80 100644
--- a/wavinfo/wave_reader.py
+++ b/wavinfo/wave_reader.py
@@ -16,6 +16,8 @@ from .wave_cues_reader import WavCuesReader
 from .wave_smpl_reader import WavSmplReader
 
 #: Calculated statistics about the audio data.
+
+
 class WavDataDescriptor(NamedTuple):
     byte_count: int
     frame_count: int
@@ -81,7 +83,7 @@ class WavInfoReader:
         #: RIFF cues markers, labels, and notes.
         self.cues: Optional[WavCuesReader] = None
 
-        #: Sampler `smpl` metadata 
+        #: Sampler `smpl` metadata
         self.smpl: Optional[WavSmplReader] = None
 
         if hasattr(path, 'read'):
diff --git a/wavinfo/wave_smpl_reader.py b/wavinfo/wave_smpl_reader.py
index 20da66b..746689d 100644
--- a/wavinfo/wave_smpl_reader.py
+++ b/wavinfo/wave_smpl_reader.py
@@ -25,14 +25,14 @@ class WaveSmplLoop(NamedTuple):
 
     def to_dict(self):
         return {
-                'ident': self.ident,
-                'loop_type': self.loop_type,
-                'loop_type_description': self.loop_type_desc(),
-                'start_samples': self.start,
-                'end_samples': self.end,
-                'fraction': self.fraction,
-                'repetition_count': self.repetition_count,
-                }
+            'ident': self.ident,
+            'loop_type': self.loop_type,
+            'loop_type_description': self.loop_type_desc(),
+            'start_samples': self.start,
+            'end_samples': self.end,
+            'fraction': self.fraction,
+            'repetition_count': self.repetition_count,
+        }
 
 
 class WavSmplReader:
@@ -99,13 +99,13 @@ class WavSmplReader:
 
     def to_dict(self):
         return {
-                'manufactuer': self.manufacturer,
-                'product': self.product,
-                'sample_period_ns': self.sample_period_ns,
-                'midi_note': self.midi_note,
-                'midi_pitch_fraction_semis': self.midi_pitch_fraction_semis,
-                'smpte_format': self.smpte_format,
-                'smpte_offset': "%02i:%02i:%02i:%02i" % self.smpte_offset,
-                'loops': [x.to_dict() for x in self.sample_loops],
-                'sampler_user_data': self.sampler_udata,
-                }
+            'manufactuer': self.manufacturer,
+            'product': self.product,
+            'sample_period_ns': self.sample_period_ns,
+            'midi_note': self.midi_note,
+            'midi_pitch_fraction_semis': self.midi_pitch_fraction_semis,
+            'smpte_format': self.smpte_format,
+            'smpte_offset': "%02i:%02i:%02i:%02i" % self.smpte_offset,
+            'loops': [x.to_dict() for x in self.sample_loops],
+            'sampler_user_data': self.sampler_udata,
+        }