diff --git a/Project2.fst b/Project2.fst
index 67ec6a9..3a951fa 100644
--- a/Project2.fst
+++ b/Project2.fst
@@ -128,7 +128,9 @@ let step te cs  =
 	     | (MSTORE, p::v::stack') -> Next (Exec(((gas-1, pc+1, update mem p v, stack'), (actor, input, code), gs)::ps))
 	     | (MLOAD, p::stack') ->  let v = (mem p) in
             Next (Exec(((gas-1, pc+1, mem, v::stack'), (actor, input, code), gs') :: ps))
-	     | (SSTORE, p::v::stack') -> magic ()
+	     | (SSTORE, p::v::stack') -> let acc = (let (bal, stor, code) = gs actor in (bal, update stor p v, code)) in
+            let gs' = update gs actor acc in
+            Next (Exec(((gas-1, pc+1, mem, stack'), (actor, input, code), gs') :: ps))
 	     | (SLOAD, v::stack') -> Next (Exec(((gas-1, pc+1, mem, (let (bal, stor, code) = gs actor in stor v)::stack'), (actor, input, code), gs)::ps))
 	     | (BALANCE, a::stack') -> magic ()
 	     | (ADDRESS, stack') -> Next (Exec(((gas-1, pc+1, mem, actor::stack'), (actor, input, code), gs)::ps))