diff --git a/docs/reference/mapping/fields/analyzer-field.asciidoc b/docs/reference/mapping/fields/analyzer-field.asciidoc
index 6ffa75b6c8aa0..3e8f41c2f34ed 100644
--- a/docs/reference/mapping/fields/analyzer-field.asciidoc
+++ b/docs/reference/mapping/fields/analyzer-field.asciidoc
@@ -1,6 +1,7 @@
 [[mapping-analyzer-field]]
 === `_analyzer`
 
+deprecated[1.5.0, Use separate fields with different analyzers]
 The `_analyzer` mapping allows to use a document field property as the
 name of the analyzer that will be used to index the document. The
 analyzer will be used for any field that does not explicitly defines an