diff --git a/ares/setup.h b/ares/setup.h
index 69081a899..73ef0f11c 100644
--- a/ares/setup.h
+++ b/ares/setup.h
@@ -63,7 +63,7 @@
 #  endif
 #endif
 
-/+
+/*
  * Work-arounds for systems without configure support 
  */