diff --git a/packages/web3-typescript-typings/index.d.ts b/packages/web3-typescript-typings/index.d.ts
index 2fc6f277c7..6de1d3f8c0 100644
--- a/packages/web3-typescript-typings/index.d.ts
+++ b/packages/web3-typescript-typings/index.d.ts
@@ -109,9 +109,11 @@ declare module 'web3' {
             fromBlock: number|string;
             toBlock: number|string;
             address: string;
-            topics: string[];
+            topics: LogTopic[];
         }
 
+        type LogTopic = null|string|string[];
+
         interface SolidityEvent<A> {
             event: string;
             address: string;