diff --git a/src/DataFrame/DataFrame.class.st b/src/DataFrame/DataFrame.class.st
index 472aa09a..613b3904 100644
--- a/src/DataFrame/DataFrame.class.st
+++ b/src/DataFrame/DataFrame.class.st
@@ -159,12 +159,6 @@ Class {
 	#category : #'DataFrame-Core'
 }
 
-{ #category : #defaults }
-DataFrame class >> defaultNormalizer [
-
-	^ AIMinMaxNormalizer
-]
-
 { #category : #'instance creation' }
 DataFrame class >> new: aPoint [
 
@@ -1366,11 +1360,11 @@ DataFrame >> normalized [
 	"This methods returns a new DataFrame, without altering this one, that has all the columns normalized."
 
 	| normalizers normalizedColumns |
-	normalizers := (1 to: self anyOne size) collect: [ :e |  self class defaultNormalizer new ].
+	self deprecated:
+		'DataFrame will remove the dependency over normalization in the next version. You can use pharo-ai/data-preprocessing project to normalize your DataFrame and even more!'.
+	normalizers := (1 to: self anyOne size) collect: [ :e | self class defaultNormalizerClass new ].
 
-	normalizedColumns := self columns
-		with: normalizers
-		collect: [ :col :normalizer | col normalizedUsing: normalizer ].
+	normalizedColumns := self columns with: normalizers collect: [ :col :normalizer | col normalizedUsing: normalizer ].
 
 	^ self class withColumns: normalizedColumns columnNames: self columnNames
 ]