--- a/clash-prelude.cabal
+++ b/clash-prelude.cabal
@@ -400,8 +400,6 @@ test-suite unittests
   -- Note that multiple -with-rtsopts are not cumulative
   if flag(workaround-ghc-mmap-crash)
     ghc-options:    "-with-rtsopts=-N -xm20000000"
-  else
-    ghc-options:    -with-rtsopts=-N
 
   hs-source-dirs:   tests
 
