diff --git a/issue/models.py b/issue/models.py
index 30daddd..6bfd44c 100644
--- a/issue/models.py
+++ b/issue/models.py
@@ -135,13 +135,13 @@ class Issue(models.Model):
 
     def getdesc(self):
         desc = self.events.filter(issue=self,code=Event.DESCRIBE)
-        if desc.count():
+        if desc.exists():
             return desc.first().additionnal_section
         else:
             return None
     def setdesc(self, value):
         desc = self.events.filter(issue=self,code=Event.DESCRIBE)
-        if desc.count():
+        if desc.exists():
             desc = desc.first()
             desc.additionnal_section = value
             desc.save()
@@ -151,7 +151,7 @@ class Issue(models.Model):
             desc.save()
     def deldesc(self):
         desc = self.events.filter(issue=self,code=Event.DESCRIBE)
-        if desc.count():
+        if desc.exists():
             desc.first().delete()
     description = property(getdesc, setdesc, deldesc)
 
diff --git a/issue/views.py b/issue/views.py
index df1d920..cc2cddf 100644
--- a/issue/views.py
+++ b/issue/views.py
@@ -29,7 +29,7 @@ def project_add(request):
 
         if Project.objects \
                 .filter(display_name__iexact=form.cleaned_data['display_name']) \
-                .count():
+                .exists():
 
             form._errors['display_name'] = ['There is already a project with a similar name.']
 
@@ -57,7 +57,7 @@ def project_edit(request, project):
 
         if Project.objects \
                 .filter(display_name__iexact=form.cleaned_data['display_name']) \
-                .exclude(pk=project.pk).count():
+                .exclude(pk=project.pk).exists():
 
             form._errors['display_name'] = ['There is already a project with a similar name.']
 
@@ -422,7 +422,7 @@ def label_edit(request, project, id=None):
         if label:
             similar = similar.exclude(pk=label.pk)
 
-        if similar.count():
+        if similar.exists():
 
             form._errors['name'] = ['There is already a label with this name.']
 
@@ -507,7 +507,7 @@ def milestone_edit(request, project, name=None):
         if milestone:
             similar = similar.exclude(pk=milestone.pk)
 
-        if similar.count():
+        if similar.exists():
 
             form._errors['name'] = ['There is already a milestone with this name.']