diff --git a/Iceberg-Metacello-Integration/IceMetacelloPharoPlatform.class.st b/Iceberg-Metacello-Integration/IceMetacelloPharoPlatform.class.st
index 25e20e3cda..e1fdfb097e 100644
--- a/Iceberg-Metacello-Integration/IceMetacelloPharoPlatform.class.st
+++ b/Iceberg-Metacello-Integration/IceMetacelloPharoPlatform.class.st
@@ -3,7 +3,7 @@ I'm a class to add support for iceberg to metacello.
 "
 Class {
 	#name : 'IceMetacelloPharoPlatform',
-	#superclass : 'MetacelloPharoPlatform',
+	#superclass : 'MetacelloPlatform',
 	#category : 'Iceberg-Metacello-Integration-Platform',
 	#package : 'Iceberg-Metacello-Integration',
 	#tag : 'Platform'
diff --git a/Iceberg/MCDefinition.extension.st b/Iceberg/MCDefinition.extension.st
index 8ffd5440ce..3ad3333f24 100644
--- a/Iceberg/MCDefinition.extension.st
+++ b/Iceberg/MCDefinition.extension.st
@@ -5,12 +5,6 @@ MCDefinition >> addAnalysisToPackageChangeSet: aPackageChangeSet change: aChange
 	aPackageChangeSet addChange: aChange
 ]
 
-{ #category : '*Iceberg-Changes' }
-MCDefinition >> buildOn: anIceDiffBuilder [
-	
-	self subclassResponsibility
-]
-
 { #category : '*Iceberg-changes' }
 MCDefinition >> isFileDefinition [
 	
diff --git a/Iceberg/MCMethodDefinition.extension.st b/Iceberg/MCMethodDefinition.extension.st
index e09b49c08e..2a59ce3e6b 100644
--- a/Iceberg/MCMethodDefinition.extension.st
+++ b/Iceberg/MCMethodDefinition.extension.st
@@ -1,9 +1,5 @@
 Extension { #name : 'MCMethodDefinition' }
 
-{ #category : '*Iceberg-Changes' }
-MCMethodDefinition >> buildOn: anIcePackageDiff [ 
-	self shouldBeImplemented.
-]
 
 { #category : '*Iceberg-Changes' }
 MCMethodDefinition >> method [