diff --git a/spec/requests/client_prefixes_spec.rb b/spec/requests/client_prefixes_spec.rb
index bc05fb6c1..dbebf873c 100644
--- a/spec/requests/client_prefixes_spec.rb
+++ b/spec/requests/client_prefixes_spec.rb
@@ -112,7 +112,7 @@
         post '/client-prefixes', not_valid_attributes, headers
 
         expect(last_response.status).to eq(422)
-        expect(json["errors"].first).to eq("source" => "client", "title"=>"Can't be blank")
+        expect(json["errors"].first).to eq("source" => "client", "title"=>"Must exist")
       end
     end
   end
diff --git a/spec/requests/provider_prefixes_spec.rb b/spec/requests/provider_prefixes_spec.rb
index 3a46a33e4..18318294a 100644
--- a/spec/requests/provider_prefixes_spec.rb
+++ b/spec/requests/provider_prefixes_spec.rb
@@ -146,7 +146,7 @@
         post '/provider-prefixes', not_valid_attributes, headers
 
         expect(last_response.status).to eq(422)
-        expect(json["errors"].first).to eq("source"=>"provider", "title"=>"Can't be blank")
+        expect(json["errors"].first).to eq("source"=>"provider", "title"=>"Must exist")
       end
     end
   end
diff --git a/spec/requests/repository_prefixes_spec.rb b/spec/requests/repository_prefixes_spec.rb
index e44e6ab8e..2a6a5ff8b 100644
--- a/spec/requests/repository_prefixes_spec.rb
+++ b/spec/requests/repository_prefixes_spec.rb
@@ -164,7 +164,7 @@
         post '/repository-prefixes', not_valid_attributes, headers
 
         expect(last_response.status).to eq(422)
-        expect(json["errors"].first).to eq("source"=>"client", "title"=>"Can't be blank")
+        expect(json["errors"].first).to eq("source"=>"client", "title"=>"Must exist")
       end
     end
   end