diff --git a/Gemfile.lock b/Gemfile.lock
index 29a4afa..d261ef0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    query_helper (0.4.0)
+    query_helper (0.4.2)
       activerecord (> 5)
       activesupport (> 5)
       sqlite3
diff --git a/lib/query_helper/sql_manipulator.rb b/lib/query_helper/sql_manipulator.rb
index 609351d..e16b7e1 100644
--- a/lib/query_helper/sql_manipulator.rb
+++ b/lib/query_helper/sql_manipulator.rb
@@ -40,7 +40,7 @@ def build
 
     def insert_select_clauses
       @additional_select_clauses << count_sql if @include_limit_clause && !(qualify_clause_applicable? || @qualify_present)
-      @sql.insert(@parser.insert_select_index, " , #{@additional_select_clauses.join(", ")} ") if @additional_select_clauses.length > 0
+      @sql.insert(@parser.insert_select_index, " , #{@additional_select_clauses.uniq.join(", ")} ") if @additional_select_clauses.length > 0
     end
 
     def count_sql
diff --git a/lib/query_helper/version.rb b/lib/query_helper/version.rb
index f1c7f8d..ee42bd8 100644
--- a/lib/query_helper/version.rb
+++ b/lib/query_helper/version.rb
@@ -1,3 +1,3 @@
 class QueryHelper
-  VERSION = "0.4.0"
+  VERSION = "0.4.2"
 end