diff --git a/CHANGES.rst b/CHANGES.rst
index 403e2a9d23..778a6b7261 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -50,6 +50,7 @@ Changelog
 
 **Fixed**
 
+- #1540 Fix flushing CCEmail fields in Sample Add Form
 - #1533 Fix traceback from log when rendering stickers preview
 - #1525 Fix error when creating partitions with analyst user
 - #1522 Fix sporadical timeout issue when adding new samples/remarks
diff --git a/bika/lims/browser/analysisrequest/add2.py b/bika/lims/browser/analysisrequest/add2.py
index 484f67aeaa..8367c2a11d 100644
--- a/bika/lims/browser/analysisrequest/add2.py
+++ b/bika/lims/browser/analysisrequest/add2.py
@@ -826,7 +826,7 @@ def get_client_info(self, obj):
 
         # Set default CC Email field
         info["field_values"].update({
-            "CCEmails": {"value": obj.getCCEmails()}
+            "CCEmails": {"value": obj.getCCEmails(), "if_empty": True}
         })
 
         # UID of the client
diff --git a/bika/lims/browser/js/bika.lims.analysisrequest.add.js b/bika/lims/browser/js/bika.lims.analysisrequest.add.js
index fb6cceb8aa..0d9f001c41 100644
--- a/bika/lims/browser/js/bika.lims.analysisrequest.add.js
+++ b/bika/lims/browser/js/bika.lims.analysisrequest.add.js
@@ -421,7 +421,7 @@
       values_json = $.toJSON(values);
       field = $("#" + field_name + ("-" + arnum));
       if ((values.if_empty != null) && values.if_empty === true) {
-        if (!field.val()) {
+        if (field.val()) {
           return;
         }
       }
diff --git a/bika/lims/browser/js/coffee/bika.lims.analysisrequest.add.coffee b/bika/lims/browser/js/coffee/bika.lims.analysisrequest.add.coffee
index 4cecf9b89c..5dce4932b4 100644
--- a/bika/lims/browser/js/coffee/bika.lims.analysisrequest.add.coffee
+++ b/bika/lims/browser/js/coffee/bika.lims.analysisrequest.add.coffee
@@ -415,7 +415,7 @@ class window.AnalysisRequestAdd
 
     if values.if_empty? and values.if_empty is true
       # Set the value if the field is empty only
-      if not field.val()
+      if field.val()
         return
 
     console.debug "apply_dependent_value: field_name=#{field_name} field_values=#{values_json}"