diff --git a/commonmark/commonmark.cabal b/commonmark/commonmark.cabal
index caf170a..56aacdb 100644
--- a/commonmark/commonmark.cabal
+++ b/commonmark/commonmark.cabal
@@ -89,7 +89,7 @@ test-suite test-commonmark
   main-is: test-commonmark.hs
   hs-source-dirs:
       test
-  ghc-options: -threaded -rtsopts -with-rtsopts=-K40K -with-rts-opts=-kc40K
+  ghc-options: -threaded -rtsopts -with-rtsopts=-K40K -with-rtsopts=-kc40K
   if impl(ghc >= 8.10)
     ghc-options:      -Wunused-packages
   build-depends: