diff --git a/app/models/dnskey.rb b/app/models/dnskey.rb
index 58d4d9e31..e9e15802f 100644
--- a/app/models/dnskey.rb
+++ b/app/models/dnskey.rb
@@ -60,19 +60,19 @@ class Dnskey < ApplicationRecord
   def validate_algorithm
     return if alg.blank?
     return if ALGORITHMS.include?(alg.to_s)
-    errors.add(:alg, :invalid, values: ALGORITHMS.join(', '))
+    errors.add(:alg, :invalid, values: "Valid algorithms are: #{ALGORITHMS.join(', ')}")
   end
 
   def validate_protocol
     return if protocol.blank?
     return if PROTOCOLS.include?(protocol.to_s)
-    errors.add(:protocol, :invalid, values: PROTOCOLS.join(', '))
+    errors.add(:protocol, :invalid, values: "Valid protocols are: #{PROTOCOLS.join(', ')}")
   end
 
   def validate_flags
     return if flags.blank?
     return if FLAGS.include?(flags.to_s)
-    errors.add(:flags, :invalid, values: FLAGS.join(', '))
+    errors.add(:flags, :invalid, values: "Valid flags are: #{FLAGS.join(', ')}")
   end
 
   def generate_digest
diff --git a/test/models/dnskey_test.rb b/test/models/dnskey_test.rb
index 2f4eff3af..57869309c 100644
--- a/test/models/dnskey_test.rb
+++ b/test/models/dnskey_test.rb
@@ -15,29 +15,29 @@ class DnskeyTest < ActiveSupport::TestCase
     dns.protocol = 3
     dns.alg = 8
     dns.public_key = @dnskey
-    
+
     assert dns.save
   end
 
   def test_invalid_algrorithm
     dns = Dnskey.new
     dns.alg = 666
-    errors = dns.validate_algorithm
-    assert_equal errors, ['Valid algorithms are: 3, 5, 6, 7, 8, 10, 13, 14']
+    errors = dns.validate_algorithm.options[:values]
+    assert_equal errors, 'Valid algorithms are: 3, 5, 6, 7, 8, 10, 13, 14'
   end
 
   def test_invalid_protocol
     dns = Dnskey.new
     dns.protocol = 666
-    errors = dns.validate_protocol
-    assert_equal errors, ['Valid protocols are: 3']
+    errors = dns.validate_protocol.options[:values]
+    assert_equal errors, 'Valid protocols are: 3'
   end
 
   def test_invalid_flags
     dns = Dnskey.new
     dns.flags = 666
-    errors = dns.validate_flags
-    assert_equal errors, ['Valid flags are: 0, 256, 257']
+    errors = dns.validate_flags.options[:values]
+    assert_equal errors, 'Valid flags are: 0, 256, 257'
   end
 
   def test_ds_digest_type_one
@@ -49,10 +49,10 @@ class DnskeyTest < ActiveSupport::TestCase
     dns.protocol = 3
     dns.alg = 8
     dns.public_key = @dnskey
-    
+
     assert dns.save
 
     assert_equal dns.ds_digest_type, 1
     assert_equal dns.ds_digest, '640D173A44D9AF2856FBE282EE64CE11A76DBB84'
   end
-end
\ No newline at end of file
+end