2 files changed, 2 insertions, 2 deletions
diff --git a/packages/typescript-typings/types/ethers/index.d.ts b/packages/typescript-typings/types/ethers/index.d.ts
index 313e8eb8a..a3d27a98c 100644
--- a/packages/typescript-typings/types/ethers/index.d.ts
+++ b/packages/typescript-typings/types/ethers/index.d.ts
@@ -18,7 +18,7 @@ declare module 'ethers' {
         parse: (...args: any[]) => any;
         inputs: { names: string[]; types: string[] };
         signature: string;
-        topic: string;
+        topics: string[];
     }
     export class Interface {
         public functions: { [functionName: string]: FunctionDescription };
diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts
index cb3052a33..150f74a15 100644
--- a/packages/utils/src/abi_decoder.ts
+++ b/packages/utils/src/abi_decoder.ts
@@ -80,7 +80,7 @@ export class AbiDecoder {
         const ethersInterface = new ethers.Interface(abiArray);
         _.map(abiArray, (abi: AbiDefinition) => {
             if (abi.type === AbiType.Event) {
-                const topic = ethersInterface.events[abi.name].topic;
+                const topic = ethersInterface.events[abi.name].topics[0];
                 this._methodIds[topic] = abi;
             }
         });