diff --git a/lib/algolia/models/abtesting/ab_test.rb b/lib/algolia/models/abtesting/ab_test.rb
index 3328b277..23325350 100644
--- a/lib/algolia/models/abtesting/ab_test.rb
+++ b/lib/algolia/models/abtesting/ab_test.rb
@@ -144,34 +144,24 @@ def initialize(attributes = {})
 
         if attributes.key?(:click_significance)
           self.click_significance = attributes[:click_significance]
-        else
-          self.click_significance = nil
         end
 
         if attributes.key?(:conversion_significance)
           self.conversion_significance = attributes[:conversion_significance]
-        else
-          self.conversion_significance = nil
         end
 
         if attributes.key?(:add_to_cart_significance)
           self.add_to_cart_significance = attributes[:add_to_cart_significance]
-        else
-          self.add_to_cart_significance = nil
         end
 
         if attributes.key?(:purchase_significance)
           self.purchase_significance = attributes[:purchase_significance]
-        else
-          self.purchase_significance = nil
         end
 
         if attributes.key?(:revenue_significance)
           if (value = attributes[:revenue_significance]).is_a?(Hash)
             self.revenue_significance = value
           end
-        else
-          self.revenue_significance = nil
         end
 
         if attributes.key?(:updated_at)
diff --git a/lib/algolia/models/abtesting/variant.rb b/lib/algolia/models/abtesting/variant.rb
index 676be3a7..338aea90 100644
--- a/lib/algolia/models/abtesting/variant.rb
+++ b/lib/algolia/models/abtesting/variant.rb
@@ -167,14 +167,10 @@ def initialize(attributes = {})
 
         if attributes.key?(:add_to_cart_rate)
           self.add_to_cart_rate = attributes[:add_to_cart_rate]
-        else
-          self.add_to_cart_rate = nil
         end
 
         if attributes.key?(:average_click_position)
           self.average_click_position = attributes[:average_click_position]
-        else
-          self.average_click_position = nil
         end
 
         if attributes.key?(:click_count)
@@ -185,8 +181,6 @@ def initialize(attributes = {})
 
         if attributes.key?(:click_through_rate)
           self.click_through_rate = attributes[:click_through_rate]
-        else
-          self.click_through_rate = nil
         end
 
         if attributes.key?(:conversion_count)
@@ -197,8 +191,6 @@ def initialize(attributes = {})
 
         if attributes.key?(:conversion_rate)
           self.conversion_rate = attributes[:conversion_rate]
-        else
-          self.conversion_rate = nil
         end
 
         if attributes.key?(:currencies)
@@ -241,8 +233,6 @@ def initialize(attributes = {})
 
         if attributes.key?(:purchase_rate)
           self.purchase_rate = attributes[:purchase_rate]
-        else
-          self.purchase_rate = nil
         end
 
         if attributes.key?(:search_count)