diff --git a/atlas/models.py b/atlas/models.py
index cee29708..cf608e46 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -80,10 +80,10 @@ class Condition(models.Model):
     synonym = models.ManyToManyField("self", blank=True)
 
     def __str__(self) -> str:
-        if self.synonym.objects.count() == 0:
+        if self.synonym.count() == 0:
             return self.name
         else:
-            synonyms = ",".join(self.synonym.objects.all())
+            synonyms = ",".join(self.synonym.all())
             return f"{self.name} ({synonyms})"