diff --git a/src/project.cc b/src/project.cc
index de263054..a3576efb 100644
--- a/src/project.cc
+++ b/src/project.cc
@@ -348,6 +348,8 @@ std::vector<Project::Entry> LoadFromDirectoryListing(Config* init_opts,
     e.directory = config->project_dir;
     e.file = file;
     e.args = GetCompilerArgumentForFile(file);
+    if (e.args.empty())
+      e.args.push_back("%clang"); // Add a Dummy.
     e.args.push_back(e.file);
     result.push_back(
         GetCompilationEntryFromCompileCommandEntry(init_opts, config, e));