diff --git a/k4ever/transaction/admin.py b/k4ever/transaction/admin.py
index 4de287f..6142617 100644
--- a/k4ever/transaction/admin.py
+++ b/k4ever/transaction/admin.py
@@ -20,6 +20,7 @@ class TransactionAdmin(admin.ModelAdmin):
 	date_hierarchy = 'dateTime'
 	ordering = ['-dateTime']
 
+
 class VirtualTransactionAdmin(admin.ModelAdmin):
 	list_display = ('user','recipient','amount','dateTime','comment')
 	list_display_links = ('user','recipient')
@@ -28,6 +29,7 @@ class VirtualTransactionAdmin(admin.ModelAdmin):
 	date_hierarchy = 'dateTime'
 	ordering = ['-dateTime']
 
-admin.site.register(Transaction, TransactionAdmin)
+
 admin.site.register(TransactionType)
+admin.site.register(Transaction, TransactionAdmin)
 admin.site.register(VirtualTransaction, VirtualTransactionAdmin)
diff --git a/k4ever/transaction/forms.py b/k4ever/transaction/forms.py
index 3405b9d..734b78b 100644
--- a/k4ever/transaction/forms.py
+++ b/k4ever/transaction/forms.py
@@ -17,9 +17,11 @@ from transaction.models import Transaction, VirtualTransaction
 class TransactionForm(forms.ModelForm):
 	""" ModelForm for :class:`Transactions <Transaction>` with a currency field. """
 	amount = CurrencyField(label='Betrag')
+
 	class Meta:
 		model = Transaction
 		exclude = ('user', 'dateTime', 'checked')
+
 	def clean(self):
 		# needed to enforce TransactionTypes needsCheck "default value"
 		cleaned_data = super(TransactionForm, self).clean()
@@ -27,11 +29,13 @@ class TransactionForm(forms.ModelForm):
 			self.instance.checked = not cleaned_data['transactionType'].needsCheck
 		return cleaned_data
 
+
 class VirtualTransactionForm(forms.ModelForm):
 	""" ModelForm for :class:`Virtual Transactions <VirtualTransaction>` with a
 	currency field. """
 	recipient = forms.CharField(max_length=100)
 	amount = CurrencyField(label='Betrag')
+
 	class Meta:
 		model = VirtualTransaction
 		exclude = ('user', 'dateTime')
@@ -40,7 +44,10 @@ class VirtualTransactionForm(forms.ModelForm):
 		try:
 			user = User.objects.get(username=self.cleaned_data['recipient'])
 		except User.DoesNotExist:
-			raise ValidationError(u"Emfpänger '%s' konnte nicht gefunden werden" % self.cleaned_data['recipient'])
+			raise ValidationError(u"Emfpänger '%s' konnte nicht gefunden werden"\
+				% self.cleaned_data['recipient'])
+
 		if user == self.instance.user:
-			raise ValidationError(u"Emfpänger '%s' bist du selbst" % self.cleaned_data['recipient'])			
+			raise ValidationError(u"Emfpänger '%s' bist du selbst"\
+				% self.cleaned_data['recipient'])			
 		return user
diff --git a/k4ever/transaction/models.py b/k4ever/transaction/models.py
index 72e1150..2e1135b 100644
--- a/k4ever/transaction/models.py
+++ b/k4ever/transaction/models.py
@@ -27,16 +27,20 @@ class TransactionType(models.Model):
 	def __unicode__(self):
 		return unicode(self.name)
 
+
 class Transaction(models.Model):
 	"""Represents a money transaction into the users account. """
 	user = models.ForeignKey(User)
 	transactionType = models.ForeignKey(TransactionType, verbose_name='Typ')
 	dateTime = models.DateTimeField(auto_now_add=True)
-	amount = models.DecimalField(max_digits=8, decimal_places=2, validators=[validate_notZero])
+	amount = models.DecimalField(max_digits=8, decimal_places=2,
+		validators=[validate_notZero])
 	checked = models.BooleanField(default=False)
 	
 	def __unicode__(self):
-		return u"%s for user %s (%s),%schecked" % (self.amount, self.user, self.transactionType, (self.checked and " " or " not "))
+		return u"%s for user %s (%s),%schecked" % (
+			self.amount, self.user, self.transactionType,
+			(self.checked and " " or " not "))
 	
 	def save(self, *args, **kwargs):
 		profile = self.user.get_profile()
@@ -63,15 +67,18 @@ class Transaction(models.Model):
 		profile = instance.user.get_profile()
 		profile.balance -= instance.amount
 		profile.save()
-		
+
 pre_delete.connect(Transaction.pre_delete_signal, sender=Transaction)
 
+
 class VirtualTransaction(models.Model):
 	""" Represents a transaction between two users. """
 	user = models.ForeignKey(User, null=True, on_delete=SET_NULL)
-	recipient = models.ForeignKey(User, related_name='receivedtransaction', null=True, on_delete=SET_NULL, verbose_name=u'Empfänger')
+	recipient = models.ForeignKey(User, related_name='receivedtransaction',
+		null=True, on_delete=SET_NULL, verbose_name=u'Empfänger')
 	dateTime = models.DateTimeField(auto_now_add=True)
-	amount = models.DecimalField(max_digits=8, decimal_places=2, validators=[MinValueValidator(Decimal("0.01"))], verbose_name='Betrag')
+	amount = models.DecimalField(max_digits=8, decimal_places=2,
+		validators=[MinValueValidator(Decimal("0.01"))], verbose_name='Betrag')
 	comment = models.CharField(max_length=100, verbose_name='Verwendungszweck')
 	
 	def __unicode__(self):
@@ -118,4 +125,3 @@ class VirtualTransaction(models.Model):
 			VirtualTransaction.moveMoney(instance.recipient, instance.user, amount)
 
 pre_delete.connect(VirtualTransaction.pre_delete_signal, sender=VirtualTransaction)
-
diff --git a/k4ever/transaction/views.py b/k4ever/transaction/views.py
index 8166347..b233753 100644
--- a/k4ever/transaction/views.py
+++ b/k4ever/transaction/views.py
@@ -21,6 +21,7 @@ def overview(request):
 	# create history
 	history = Transaction.objects.filter(user=request.user).order_by("-dateTime")
 	vhistory = VirtualTransaction.objects.filter(Q(user=request.user) | Q(recipient=request.user)).order_by("-dateTime")
+
 	# create forms
 	form = TransactionForm()
 	vform = VirtualTransactionForm()