diff --git a/spec/grape/validations/params_scope_spec.rb b/spec/grape/validations/params_scope_spec.rb
index a9173e9a5b..8c5cce6ed0 100644
--- a/spec/grape/validations/params_scope_spec.rb
+++ b/spec/grape/validations/params_scope_spec.rb
@@ -126,7 +126,7 @@ class AnotherCustomType
           def self.parse(value)
             case value
             when 'invalid with message'
-              Grape::Validations::Types::InvalidValue.new "is not correct"
+              Grape::Validations::Types::InvalidValue.new 'is not correct'
             when 'invalid without message'
               Grape::Validations::Types::InvalidValue.new
             else