diff --git a/test/unit/datasource/ds_test_util.hpp b/test/unit/datasource/ds_test_util.hpp
index 35b148a97..bfa5b1757 100644
--- a/test/unit/datasource/ds_test_util.hpp
+++ b/test/unit/datasource/ds_test_util.hpp
@@ -36,7 +36,7 @@ std::string vector_to_string(T const& vec)
     std::stringstream s;
     for (auto const& item : vec)
     {
-        s << item << "\n";
+        s << "  " << item << "\n";
     }
     return s.str();
 }
@@ -47,13 +47,13 @@ std::string vector_to_string(std::vector<mapnik::attribute_descriptor> const& ve
     std::stringstream s;
     for (auto const& item : vec)
     {
-        s << item.get_name() << "\n";
+        s << "  " << item.get_name() << "\n";
     }
     return s.str();
 }
 
 #define REQUIRE_FIELD_NAMES(fields, names) \
-    INFO("fields: " + vector_to_string(fields) + " names: " +  vector_to_string(names)); \
+    INFO("fields:\n" + vector_to_string(fields) + "names:\n" +  vector_to_string(names)); \
     REQUIRE(fields.size() == names.size()); \
     auto itr_a = fields.begin(); \
     auto const end_a = fields.end(); \