diff --git a/packages/Sandblocks-Core/SBTabView.class.st b/packages/Sandblocks-Core/SBTabView.class.st
index 9a242208..dd898345 100644
--- a/packages/Sandblocks-Core/SBTabView.class.st
+++ b/packages/Sandblocks-Core/SBTabView.class.st
@@ -408,8 +408,8 @@ SBTabView >> paddedDiffTexts [
 	| diffs maxLines |
 	diffs := self namedBlocks collect: [:aNamedBlock |  
 		(TextDiffBuilder 
-				from: (self plainSourceStringFor: aNamedBlock) 
-				to: (self plainSourceStringFor: self active)) buildDisplayPatch].
+				from: (self sourceStringFor: aNamedBlock) 
+				to: (self sourceStringFor: self active)) buildDisplayPatch].
 			
 	maxLines := (diffs collect: [:aText | aText lineCount]) max.
 	
@@ -419,17 +419,6 @@ SBTabView >> paddedDiffTexts [
 		paddedText]
 ]
 
-{ #category : #diffing }
-SBTabView >> plainSourceStringFor: aNamedBlock [
-
-	^ aNamedBlock block isBlockBody
-		ifFalse: [aNamedBlock block sourceString]
-		ifTrue: [ ((aNamedBlock block statements 
-				reject: #isUnknown) 
-				collect: #unwrappedSourceString)
-				fold: [:a :b | a, Character cr, b]]
-]
-
 { #category : #ui }
 SBTabView >> rebuild [
 
@@ -479,6 +468,15 @@ SBTabView >> setActive: aNamedBlock [
 		(self switchCommandFor: (self namedBlocks indexOf: aNamedBlock ifAbsent: 1))
 ]
 
+{ #category : #diffing }
+SBTabView >> sourceStringFor: aNamedBlock [
+
+	^ aNamedBlock block isBlockBody
+		ifFalse: [aNamedBlock block sourceString]
+		ifTrue: [ (aNamedBlock block statements collect: #sourceString)
+				fold: [:a :b | a, Character cr, b]]
+]
+
 { #category : #commands }
 SBTabView >> switchCommandFor: aNumber [
 
diff --git a/packages/Sandblocks-Smalltalk/SBStMessageSend.class.st b/packages/Sandblocks-Smalltalk/SBStMessageSend.class.st
index 299e0e79..7fb01188 100644
--- a/packages/Sandblocks-Smalltalk/SBStMessageSend.class.st
+++ b/packages/Sandblocks-Smalltalk/SBStMessageSend.class.st
@@ -553,15 +553,6 @@ SBStMessageSend >> tryReplacements [
 		option automatic ifTrue: [option apply: c]]
 ]
 
-{ #category : #converting }
-SBStMessageSend >> unwrappedSourceString [
-
-	^ String streamContents: [:aStream | 
-		self actualReceiver writeSourceOn: aStream.
-		aStream space.
-		signature writeSourceOn: aStream.]
-]
-
 { #category : #accessing }
 SBStMessageSend >> useAsVariable [
 	<action>