diff --git a/backend/amd64/simd_selection.ml b/backend/amd64/simd_selection.ml
index 71b90c93e5..42eeedccaa 100644
--- a/backend/amd64/simd_selection.ml
+++ b/backend/amd64/simd_selection.ml
@@ -843,6 +843,7 @@ let vectorize_operation (width_type : Vectorize_utils.Width_in_bits.t)
       | W32 -> None (* See previous comment *)
       | W16 -> None
       | W8 -> None)
+    | Ifloatarithmem _ -> None
     | Istore_int (_n, addressing_mode, is_assignment) -> (
       if not (Vectorize_utils.Width_in_bits.equal width_type W64)
       then None