diff --git a/src.ts/shims/setimmediate.ts b/src.ts/shims/setimmediate.ts
deleted file mode 100644
index 30cbc2ae5..000000000
--- a/src.ts/shims/setimmediate.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-
-function setImmediate(func: ) {
-    setTimeout(func, 0);
-}
-
-export { setImmediate }
diff --git a/src.ts/utils/index.ts b/src.ts/utils/index.ts
index d454d3541..4662c761d 100644
--- a/src.ts/utils/index.ts
+++ b/src.ts/utils/index.ts
@@ -17,7 +17,7 @@ import { randomBytes } from './random-bytes';
 import { getNetwork } from './networks';
 import { defineFrozen, defineReadOnly, resolveProperties, shallowCopy } from './properties';
 import * as RLP from './rlp';
-import { verifyMessage } from './secp256k1';
+import { computePublicKey, verifyMessage } from './secp256k1';
 import { parse as parseTransaction, serialize as serializeTransaction } from './transaction';
 import { toUtf8Bytes, toUtf8String } from './utf8';
 import { formatEther, parseEther, formatUnits, parseUnits } from './units';
@@ -116,6 +116,7 @@ export {
 
     getJsonWalletAddress,
 
+    computePublicKey,
     verifyMessage,
 
     errors