diff --git a/spec/functions/concat_spec.rb b/spec/functions/concat_spec.rb
index d443c4bf7..49fa6bb36 100755
--- a/spec/functions/concat_spec.rb
+++ b/spec/functions/concat_spec.rb
@@ -13,6 +13,10 @@
     expect { scope.function_concat([1, []])}.to(raise_error(Puppet::ParseError))
   end
 
+  it "should not raise a ParseError if the client provides more than two arguments" do
+    expect { scope.function_concat([[1],[2],[3]]) }.not_to raise_error
+  end
+
   it "should be able to concat an array" do
     result = scope.function_concat([['1','2','3'],['4','5','6']])
     expect(result).to(eq(['1','2','3','4','5','6']))