diff --git a/app/models/client.rb b/app/models/client.rb
index 89b415a20..19327b459 100644
--- a/app/models/client.rb
+++ b/app/models/client.rb
@@ -419,7 +419,7 @@ def check_language
 
   def check_certificate
     Array.wrap(certificate).each do |c|
-      errors.add(:certificate, "Certificate #{c} is not included in the list of supported certificates.") unless ["CoreTrustSeal", "DIN 31644", "DINI", "DSA", "RatSWD", "WDS"].include?(c)
+      errors.add(:certificate, "Certificate #{c} is not included in the list of supported certificates.") unless ["CoreTrustSeal", "DIN 31644", "DINI", "DSA", "RatSWD", "WDS", "CLARIN"].include?(c)
     end
   end
 
diff --git a/spec/models/client_spec.rb b/spec/models/client_spec.rb
index 7579f4977..2805364ec 100644
--- a/spec/models/client_spec.rb
+++ b/spec/models/client_spec.rb
@@ -61,6 +61,12 @@
       expect(client.errors.details).to be_empty
     end
 
+    it "should support certificate" do
+      client.certificate = ["CLARIN"]
+      expect(client.save).to be true
+      expect(client.errors.details).to be_empty
+    end
+
     it "should support multiple certificates" do
       client.certificate = ["WDS", "DSA"]
       expect(client.save).to be true