diff --git a/src/Mapless-Memory-Core/MaplessMemoryRepository.class.st b/src/Mapless-Memory-Core/MaplessMemoryRepository.class.st
index 2da3be7d..0420e50c 100644
--- a/src/Mapless-Memory-Core/MaplessMemoryRepository.class.st
+++ b/src/Mapless-Memory-Core/MaplessMemoryRepository.class.st
@@ -72,11 +72,6 @@ MaplessMemoryRepository >> drop [
 	^ self do: [ self database drop ]
 ]
 
-{ #category : #actions }
-MaplessMemoryRepository >> ensureCollection [
-	self shouldBeImplemented
-]
-
 { #category : #testing }
 MaplessMemoryRepository >> existsId: anId of: aMaplessClass [