diff --git a/pySim-shell.py b/pySim-shell.py
index 3fc58590..0be6f21f 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -72,15 +72,15 @@ def init_card(sl):
 		sl.wait_for_card(3)
 	except NoCardError:
 		print("No card detected!")
-		return None, None;
+		return None, None
 	except:
 		print("Card not readable!")
-		return None, None;
+		return None, None
 
 	card = card_detect("auto", scc)
 	if card is None:
 		print("Could not detect card type!")
-		return None, None;
+		return None, None
 
 	# Create runtime state with card profile
 	profile = CardProfileUICC()
@@ -207,7 +207,7 @@ class PysimApp(cmd2.Cmd):
 	@cmd2.with_category(CUSTOM_CATEGORY)
 	def do_equip(self, opts):
 		"""Equip pySim-shell with card"""
-		rs, card = init_card(sl);
+		rs, card = init_card(sl)
 		self.equip(card, rs)
 
 	class InterceptStderr(list):
@@ -352,7 +352,7 @@ class PysimApp(cmd2.Cmd):
 			except (KeyboardInterrupt):
 				self.poutput("")
 				self.poutput("Terminated by user!")
-				return;
+				return
 			except (SystemExit):
 				# When all cards are processed the card handler device will throw a SystemExit
 				# exception. Also Errors that are not recoverable (cards stuck etc.) will end up here.
diff --git a/pySim/utils.py b/pySim/utils.py
index def88f03..68de14ae 100644
--- a/pySim/utils.py
+++ b/pySim/utils.py
@@ -133,7 +133,7 @@ def comprehensiontlv_encode_tag(tag) -> bytes:
     compr = tag.get('comprehension', False)
     if tag['tag'] in [0x00, 0x80, 0xff] or tag['tag'] > 0xff:
         # 3-byte format
-        byte3 = tag['tag'] & 0xff;
+        byte3 = tag['tag'] & 0xff
         byte2 = (tag['tag'] >> 8) & 0x7f
         if compr:
             byte2 |= 0x80
@@ -243,7 +243,7 @@ def bertlv_encode_tag(t) -> bytes:
         t |= (cls & 3) << 6
         return bytes([t])
     else: # multi-byte tag
-        t = 0x1f;
+        t = 0x1f
         if constructed:
             t |= 0x20
         t |= (cls & 3) << 6