diff --git a/hshetl/entities.py b/hshetl/entities.py
index b7d45623240950389540c2d8cd0b549e45bdddb0..d068a418a78988798b41b04407e9fb954d15ad54 100644
--- a/hshetl/entities.py
+++ b/hshetl/entities.py
@@ -183,10 +183,10 @@ class Container(list):
         '''Add a container collisions or break.'''
         if self.collision_handling == COLLISION_HANDLING_BREAKALL or \
            self.collision_handling == COLLISION_HANDLING_BREAKCONTAINER:
-            msg = 'Collision in %s system detected! Aborting! %s found twice.' % (self, repr(record))
+            msg = 'Collision in %s system detected! Aborting! %s found twice.' % (self.name, repr(record))
             raise DuplicatedSystemIdException(msg)
         else:
-            msg = 'Collision in %s container detected! Ignoring collision. %s found twice and added to collision.' % (self, repr(record))
+            msg = 'Collision in %s container detected! Ignoring collision. %s found twice and added to collision.' % (self.name, repr(record))
             logging.warn(msg)
             self.collisions.append(record)
 
@@ -194,10 +194,10 @@ class Container(list):
         '''Add a join collisions or break.'''
         if self.collision_handling == COLLISION_HANDLING_BREAKALL or \
            self.collision_handling == COLLISION_HANDLING_BREAKJOIN:
-            msg = 'Collision in %s system detected! Aborting! %s found twice.' % (self, repr(record))
+            msg = 'Collision in %s system detected! Aborting! %s found twice.' % (self.name, repr(record))
             raise DuplicatedJoinIdException(msg)
         else:
-            msg = 'Collision in %s container detected! Ignoring collision. %s found twice and added to collision.' % (self, repr(record))
+            msg = 'Collision in %s container detected! Ignoring collision. %s found twice and added to collision.' % (self.name, repr(record))
             logging.warn(msg)
             self.join_collisions.append(record)