1 files changed, 1 insertions, 1 deletions
diff --git a/tools/render-test/options.cpp b/tools/render-test/options.cpp
index d2f21a5d9..e13a2b88f 100644
--- a/tools/render-test/options.cpp
+++ b/tools/render-test/options.cpp
@@ -183,7 +183,7 @@ SlangResult parseOptions(int argc, const char*const* argv, Slang::WriterHelper s
         {
             if (argCursor == argEnd)
             {
-                stdError.print("error: comma separated compute dispatch size for '%s'\n", arg);
+                stdError.print("error: expecting a comma separated compute dispatch size for '%s'\n", arg);
                 return SLANG_FAIL;
             }
             List<UnownedStringSlice> slices;