diff --git a/unordered-containers.cabal b/unordered-containers.cabal
index 2528c4c2..661c0fda 100644
--- a/unordered-containers.cabal
+++ b/unordered-containers.cabal
@@ -133,7 +133,7 @@ benchmark benchmarks
     unordered-containers
 
   default-language: Haskell2010
-  ghc-options: -Wall -O2 -rtsopts "-with-rtsopts=-A32m --nonmoving-gc"
+  ghc-options: -Wall -O2 -rtsopts "-with-rtsopts=-A32m" -fproc-alignment=64
   -- cpp-options: -DBENCH_containers_Map -DBENCH_containers_IntMap -DBENCH_hashmap_Map
 
 source-repository head