diff --git a/app/models/verification/management/document.rb b/app/models/verification/management/document.rb
index ee9e5462d..481073397 100644
--- a/app/models/verification/management/document.rb
+++ b/app/models/verification/management/document.rb
@@ -32,7 +32,7 @@ class Verification::Management::Document
   end
 
   def under_sixteen?(response)
-    16.years.ago < string_to_date(response.date_of_birth)
+    16.years.ago < response.date_of_birth
   end
 
   def verified?
@@ -43,4 +43,4 @@ class Verification::Management::Document
     user.update(verified_at: Time.now) if user?
   end
 
-end
\ No newline at end of file
+end
diff --git a/lib/active_model/dates.rb b/lib/active_model/dates.rb
index 5dd8e971c..f9605ddbd 100644
--- a/lib/active_model/dates.rb
+++ b/lib/active_model/dates.rb
@@ -13,9 +13,4 @@ module ActiveModel::Dates
     attrs.except("#{field}(1i)", "#{field}(2i)", "#{field}(3i)")
   end
 
-  def string_to_date(value)
-    day, month, year = value.split("-")
-    Date.new(year.to_i, month.to_i, day.to_i)
-  end
-
 end