diff --git a/compiler/cmm/CmmMachOp.hs b/compiler/cmm/CmmMachOp.hs
index 2bf8bc207e44dfac3e1cdebe5c9af5a0e807d4e1..5073517be9374d73a82a067f919a014bedd47533 100644
--- a/compiler/cmm/CmmMachOp.hs
+++ b/compiler/cmm/CmmMachOp.hs
@@ -198,6 +198,8 @@ isCommutableMachOp mop =
         MO_And _                -> True
         MO_Or _                 -> True
         MO_Xor _                -> True
+        MO_F_Add _              -> True
+        MO_F_Mul _              -> True
         _other                  -> False
 
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