diff --git a/src/tl/tl/tlGit.cc b/src/tl/tl/tlGit.cc
index 5573b199d..47a3f4674 100644
--- a/src/tl/tl/tlGit.cc
+++ b/src/tl/tl/tlGit.cc
@@ -260,8 +260,13 @@ credentials_cb (git_cred ** /*out*/, const char * /*url*/, const char * /*userna
 #endif
 {
   //  no credentials aquired
+#if LIBGIT2_VER_MAJOR > 0 || (LIBGIT2_VER_MAJOR == 0 && LIBGIT2_VER_MINOR >= 28)
   git_error_set_str (GIT_ERROR_NONE, "anonymous access is supported only, but server requests credentials");
+#else
+  git_error_set_str (GITERR_NONE, "anonymous access is supported only, but server requests credentials");
+#endif
   return GIT_EUSER;
+
 }
 
 void