diff --git a/src/datatokens/Datatokens.ts b/src/datatokens/Datatokens.ts
index bfe34f98..192fb82c 100644
--- a/src/datatokens/Datatokens.ts
+++ b/src/datatokens/Datatokens.ts
@@ -417,4 +417,10 @@ export class DataTokens {
     }
     return null
   }
+
+  public getStartOrderEventSignature(): string {
+    const abi = this.datatokensABI as AbiItem[]
+    const eventdata = abi.find((o) => (o.name = 'OrderStarted'))
+    return this.web3.eth.abi.encodeEventSignature(eventdata as any)
+  }
 }
diff --git a/src/ocean/Assets.ts b/src/ocean/Assets.ts
index 1d3232a4..1fcee03e 100644
--- a/src/ocean/Assets.ts
+++ b/src/ocean/Assets.ts
@@ -612,10 +612,11 @@ export class Assets extends Instantiable {
   ): Promise<Order[]> {
     const results: Order[] = []
     const address = account.getId().toLowerCase()
+    const { datatokens } = this.ocean
     const events = await this.web3.eth.getPastLogs({
       topics: [
         [
-          '0xe1c4fa794edfa8f619b8257a077398950357b9c6398528f94480307352f9afcc',
+          datatokens.getStartOrderEventSignature(),
           null,
           '0x000000000000000000000000' + address.substring(address.length - 40)
         ]