--- a/clash-lib.cabal
+++ b/clash-lib.cabal
@@ -393,8 +393,6 @@ test-suite unittests
   -- common RTS options in the unconditional GHC-Options
   if arch(x86_64) && flag(workaround-ghc-mmap-crash)
     GHC-Options: "-with-rtsopts=-N -xm20000000"
-  else
-    GHC-Options: -with-rtsopts=-N
   hs-source-dirs:   tests
 
   if !flag(unittests)
