diff --git a/src/shell/CMakeLists.txt b/src/shell/CMakeLists.txt
index ed567a4b58..d250e56c0f 100644
--- a/src/shell/CMakeLists.txt
+++ b/src/shell/CMakeLists.txt
@@ -86,7 +86,7 @@ add_test(lean_ghash1   "${CMAKE_CURRENT_BINARY_DIR}/lean" -g)
 add_test(lean_ghash2   "${CMAKE_CURRENT_BINARY_DIR}/lean" --githash)
 add_test(lean_path1    "${CMAKE_CURRENT_BINARY_DIR}/lean" -p)
 add_test(lean_path2    "${CMAKE_CURRENT_BINARY_DIR}/lean" --path)
-# add_test(lean_new_frontend "${CMAKE_CURRENT_BINARY_DIR}/lean" --new-frontend "${LEAN_SOURCE_DIR}/../library/init/core.lean")
+add_test(lean_new_frontend "${CMAKE_CURRENT_BINARY_DIR}/lean" --new-frontend "${LEAN_SOURCE_DIR}/../library/init/core.lean")
 add_test(lean_unknown_option bash "${LEAN_SOURCE_DIR}/cmake/check_failure.sh" "${CMAKE_CURRENT_BINARY_DIR}/lean" "-z")
 add_test(lean_unknown_file1 bash "${LEAN_SOURCE_DIR}/cmake/check_failure.sh" "${CMAKE_CURRENT_BINARY_DIR}/lean" "boofoo.lean")
 # The following test needs new elaborator to support match
diff --git a/src/shell/lean.cpp b/src/shell/lean.cpp
index a8b4daa172..8e9e52fef2 100644
--- a/src/shell/lean.cpp
+++ b/src/shell/lean.cpp
@@ -467,7 +467,11 @@ int main(int argc, char ** argv) {
         }
         mod_fn = lrealpath(argv[optind]);
         contents = read_file(mod_fn);
-        env      = set_main_module_name(env, module_name_of_file(path.get_path(), mod_fn));
+        search_path input_path = path.get_path();
+        /* We accept stand-alone files as input, but imports should always be part of a package so that we can give
+         * them a (stable) absolute name. */
+        input_path.push_back(dirname(mod_fn));
+        env      = set_main_module_name(env, module_name_of_file(input_path, mod_fn));
     }
     try {
         scope_traces_as_messages scope_trace_msgs(mod_fn, {1, 0});