diff --git a/llvm/tools/dsymutil/Options.td b/llvm/tools/dsymutil/Options.td
index e99bc12fa7fd8..571f90c1e46f5 100644
--- a/llvm/tools/dsymutil/Options.td
+++ b/llvm/tools/dsymutil/Options.td
@@ -94,7 +94,7 @@ def: Flag<["-"], "s">,
   Group<grp_general>;
 
 def flat: F<"flat">,
-  HelpText<"Produce a flat dSYM file (not a bundle).">,
+  HelpText<"Produce a flat dSYM file (not a bundle). Intended for testing and generally unsupported by tools that consume dSYMs.">,
   Group<grp_general>;
 def: Flag<["-"], "f">,
   Alias<flat>,