diff --git a/app/assets/javascripts/app/lib/app_post/utils.coffee b/app/assets/javascripts/app/lib/app_post/utils.coffee
index 6ea202fa0..810bee3eb 100644
--- a/app/assets/javascripts/app/lib/app_post/utils.coffee
+++ b/app/assets/javascripts/app/lib/app_post/utils.coffee
@@ -821,12 +821,16 @@ class App.Utils
 
       # en
       attachmentTranslatedRegExp = new RegExp("\\W#{word}\\W", 'i')
-      return word if message.match(attachmentTranslatedRegExp)
+
+      # remove blockquote, check only the unquoted content
+      return word if message.replace(/(<blockquote>.*<\/blockquote>)/g, "").match(attachmentTranslatedRegExp)
 
       # user locale
       attachmentTranslated = App.i18n.translateContent(word)
       attachmentTranslatedRegExp = new RegExp("\\W#{attachmentTranslated}\\W", 'i')
-      return attachmentTranslated if message.match(attachmentTranslatedRegExp)
+
+      # remove blockquote, check only the unquoted content
+      return attachmentTranslated if message.replace(/(<blockquote>.*<\/blockquote>)/g, "").match(attachmentTranslatedRegExp)
     false
 
   # human readable file size
diff --git a/public/assets/tests/html_utils.js b/public/assets/tests/html_utils.js
index 0294bd8f1..acb98b33c 100644
--- a/public/assets/tests/html_utils.js
+++ b/public/assets/tests/html_utils.js
@@ -1281,6 +1281,11 @@ test("check check attachment reference", function() {
   result = 'Enclosed'
   verify = App.Utils.checkAttachmentReference(message)
   equal(verify, result)
+
+  message = '<div>Hi Test,</div><div><blockquote>On Monday, 22 July 2019, 14:07:54, Test User wrote:<br><br>Test attachment<br></blockquote></div>'
+  result = false
+  verify = App.Utils.checkAttachmentReference(message)
+  equal(verify, result)
 });
 
 // replace tags