diff --git a/multisig-factory/res/multisig_factory.wasm b/multisig-factory/res/multisig_factory.wasm
index 8c95ec9e..4d585b10 100755
Binary files a/multisig-factory/res/multisig_factory.wasm and b/multisig-factory/res/multisig_factory.wasm differ
diff --git a/multisig/res/multisig.wasm b/multisig/res/multisig.wasm
index edbaa54a..48e308cf 100755
Binary files a/multisig/res/multisig.wasm and b/multisig/res/multisig.wasm differ
diff --git a/multisig/src/lib.rs b/multisig/src/lib.rs
index 510bc2cb..0c5423ca 100644
--- a/multisig/src/lib.rs
+++ b/multisig/src/lib.rs
@@ -99,9 +99,13 @@ impl Default for MultiSigContract {
 impl MultiSigContract {
     /// Initialize multisig contract.
     /// @params num_confirmations: k of n signatures required to perform operations.
-    #[init]
+    #[init(ignore_state)]
     pub fn new(num_confirmations: u32) -> Self {
-        assert!(!env::state_exists(), "Already initialized");
+        assert_eq!(
+            env::current_account_id(),
+            env::predecessor_account_id(),
+            "Predecessor account must match current account"
+        );
         Self {
             num_confirmations,
             request_nonce: 0,
diff --git a/multisig2/res/multisig2.wasm b/multisig2/res/multisig2.wasm
index 45cfacd5..ec562f5f 100755
Binary files a/multisig2/res/multisig2.wasm and b/multisig2/res/multisig2.wasm differ
diff --git a/multisig2/src/lib.rs b/multisig2/src/lib.rs
index 052bfabb..81109bec 100644
--- a/multisig2/src/lib.rs
+++ b/multisig2/src/lib.rs
@@ -144,8 +144,13 @@ impl MultiSigContract {
     /// Initialize multisig contract.
     /// @params members: list of {"account_id": "name"} or {"public_key": "key"} members.
     /// @params num_confirmations: k of n signatures required to perform operations.
-    #[init]
+    #[init(ignore_state)]
     pub fn new(members: Vec<MultisigMember>, num_confirmations: u32) -> Self {
+        assert_eq!(
+            env::current_account_id(),
+            env::predecessor_account_id(),
+            "Predecessor account must match current account"
+        );
         assert(
             members.len() >= num_confirmations as usize,
             "Members list must be equal or larger than number of confirmations",