diff --git a/x86_symbolic/src/Data/Macaw/X86/Crucible.hs b/x86_symbolic/src/Data/Macaw/X86/Crucible.hs
index 2193cf1c..ee8b1827 100644
--- a/x86_symbolic/src/Data/Macaw/X86/Crucible.hs
+++ b/x86_symbolic/src/Data/Macaw/X86/Crucible.hs
@@ -207,6 +207,12 @@ pureSem sym fn =
 
             _ -> fail "Unepected size for VPCLMULQDQ"
 
+        M.VPUnpackLQDQ -> vecOp2 sym LittleEndian w (knownNat @64) x y $
+          \xs ys -> let n = V.length xs
+                    in case mul2Plus n of
+                         Refl -> V.take n (V.interlieve xs ys)
+
+
         M.VAESEnc
           | Just Refl <- testEquality w n128 ->
             do let f = fnAesEnc (symFuns sym)
@@ -247,6 +253,7 @@ pureSem sym fn =
            case mulCancelR elNum (V.length xs) elSz of
              Refl -> V.insertAt i e xs
 
+
 semPointwise :: (1 <= w) =>
   M.AVXPointWiseOp2 -> NatRepr w ->
     E sym (BVType w) -> E sym (BVType w) -> E sym (BVType w)