diff --git a/app/javascript/dashboard/components/widgets/conversation/ConversationAdvancedFilter.vue b/app/javascript/dashboard/components/widgets/conversation/ConversationAdvancedFilter.vue
index c79731425..acf7f3cfd 100644
--- a/app/javascript/dashboard/components/widgets/conversation/ConversationAdvancedFilter.vue
+++ b/app/javascript/dashboard/components/widgets/conversation/ConversationAdvancedFilter.vue
@@ -192,7 +192,6 @@ export default {
         'setConversationFilters',
         JSON.parse(JSON.stringify(this.appliedFilters))
       );
-      this.appliedFilters[this.appliedFilters.length - 1].query_operator = null;
       this.$emit('applyFilter', this.appliedFilters);
     },
     resetFilter(index, currentFilter) {
diff --git a/app/javascript/dashboard/helper/filterQueryGenerator.js b/app/javascript/dashboard/helper/filterQueryGenerator.js
index f2fbd39aa..590debf03 100644
--- a/app/javascript/dashboard/helper/filterQueryGenerator.js
+++ b/app/javascript/dashboard/helper/filterQueryGenerator.js
@@ -11,7 +11,10 @@ const generatePayload = data => {
     }
     return item;
   });
-
+  // For every query added, the query_operator is set default to and so the
+  // last query will have an extra query_operator, this would break the api.
+  // Setting this to null for all query payload
+  payload[payload.length - 1].query_operator = undefined;
   return { payload };
 };
 
diff --git a/app/javascript/dashboard/helper/specs/filterQueryGenerator.spec.js b/app/javascript/dashboard/helper/specs/filterQueryGenerator.spec.js
index aee524c5e..9120ea930 100644
--- a/app/javascript/dashboard/helper/specs/filterQueryGenerator.spec.js
+++ b/app/javascript/dashboard/helper/specs/filterQueryGenerator.spec.js
@@ -31,7 +31,7 @@ const testData = [
     attribute_key: 'id',
     filter_operator: 'equal_to',
     values: 'This is a test',
-    query_operator: null,
+    query_operator: 'or',
   },
 ];
 
@@ -53,7 +53,6 @@ const finalResult = {
       attribute_key: 'id',
       filter_operator: 'equal_to',
       values: ['This is a test'],
-      query_operator: null,
     },
   ],
 };
diff --git a/app/javascript/dashboard/routes/dashboard/contacts/components/ContactsAdvancedFilters.vue b/app/javascript/dashboard/routes/dashboard/contacts/components/ContactsAdvancedFilters.vue
index 5c0aae26c..a91f4e6d4 100644
--- a/app/javascript/dashboard/routes/dashboard/contacts/components/ContactsAdvancedFilters.vue
+++ b/app/javascript/dashboard/routes/dashboard/contacts/components/ContactsAdvancedFilters.vue
@@ -160,7 +160,6 @@ export default {
         'contacts/setContactFilters',
         JSON.parse(JSON.stringify(this.appliedFilters))
       );
-      this.appliedFilters[this.appliedFilters.length - 1].query_operator = null;
       this.$emit('applyFilter', this.appliedFilters);
     },
     resetFilter(index, currentFilter) {