diff --git a/lib/puppet/type/acl.rb b/lib/puppet/type/acl.rb
index 6770f28..fa1eaad 100644
--- a/lib/puppet/type/acl.rb
+++ b/lib/puppet/type/acl.rb
@@ -211,20 +211,8 @@ def insync?(is)
     defaultto :false
   end
 
-  def self.pick_default_perms(perms)
-    non_default = perms.reject { |perm| perm =~ /^d/ }
-    default = perms.reject { |perm| perm !~ /^d/ }.map {
-      |perm| perm.split(':')[1..-1].join(':')
-    }
-    Set.new((non_default + default).map { |perm|
-      key = perm.split(':')[0..1].join(':')
-      matching_default = default.reject { |tmp_perm| tmp_perm !~ /^#{key}:/ }
-      if (matching_default.length > 0)
-        matching_default
-      else
-        perm
-      end
-    }).to_a.flatten
+  def self.pick_default_perms(acl)
+    return acl.reject { |a| a.split(':', -1).length == 4 }
   end
 
   def newchild(path)
diff --git a/spec/unit/puppet/type/acl_spec.rb b/spec/unit/puppet/type/acl_spec.rb
index 2969827..7eac164 100644
--- a/spec/unit/puppet/type/acl_spec.rb
+++ b/spec/unit/puppet/type/acl_spec.rb
@@ -129,16 +129,28 @@
     end
   end
 
-  context 'when converting default parameters' do
+  context 'when removing default parameters' do
     basic_perms = ['user:foo:rwx', 'group:foo:rwx']
     advanced_perms = ['user:foo:rwx', 'group:foo:rwx', 'default:user:foo:---']
-    advanced_perms_results = ['user:foo:---', 'group:foo:rwx']
+    advanced_perms_results = ['user:foo:rwx', 'group:foo:rwx']
+    mysql_perms = [
+          "user:mysql:rwx",
+          "d:user:mysql:rw",
+          "mask::rwx",
+    ]
+    mysql_perms_results = [
+          "user:mysql:rwx",
+          "mask::rwx",
+    ]
     it 'should not do anything with no defaults' do
       expect(acl_type.pick_default_perms(basic_perms)).to match_array(basic_perms)
     end
-    it 'should override defaults' do
+    it 'should remove defaults' do
       expect(acl_type.pick_default_perms(advanced_perms)).to match_array(advanced_perms_results)
     end
+    it 'should remove defaults with d:' do
+      expect(acl_type.pick_default_perms(mysql_perms)).to match_array(mysql_perms_results)
+    end
   end
 
 end