1 files changed, 1 insertions, 1 deletions
diff --git a/tools/slang-test/slangc-tool.cpp b/tools/slang-test/slangc-tool.cpp
index a62ea6975..4c2a3244c 100644
--- a/tools/slang-test/slangc-tool.cpp
+++ b/tools/slang-test/slangc-tool.cpp
@@ -49,7 +49,7 @@ SlangResult SlangCTool::innerMain(StdWriters* stdWriters, slang::IGlobalSession*
         const SlangResult res = compileRequest->processCommandLineArguments(&argv[1], argc - 1);
         if (SLANG_FAILED(res))
         {
-            // TODO: print usage message
+            StdWriters::getOut().print("%s", compileRequest->getDiagnosticOutput());
             return res;
         }
     }