diff -ru a/test/libgit2.jl b/test/libgit2.jl

--- a/test/libgit2.jl	2017-12-13 20:01:57.000000000 +0100

+++ b/test/libgit2.jl	2018-03-23 18:15:16.017762597 +0100

@@ -1697,7 +1697,7 @@

                             deserialize(f)

                         end

                         @test err.code == LibGit2.Error.ERROR

-                        @test err.msg == "Invalid Content-Type: text/plain"

+                        @test err.msg == "invalid Content-Type: text/plain"

                     end

                 finally

                     kill(pobj)