diff --git a/src/explorer/explorer.service.ts b/src/explorer/explorer.service.ts
index 055b1b5..a179f3e 100644
--- a/src/explorer/explorer.service.ts
+++ b/src/explorer/explorer.service.ts
@@ -6,7 +6,7 @@ export interface TransactionData {
   data: {
     value: {
       wei: string,
-      ether: string,
+      ether: number,
       symbol?: string
     };
     token?: {
diff --git a/src/watcher/watcher.service.ts b/src/watcher/watcher.service.ts
index 6f49efb..ed99ada 100644
--- a/src/watcher/watcher.service.ts
+++ b/src/watcher/watcher.service.ts
@@ -247,7 +247,7 @@ export class WatcherService {
     const { data: { data: [txData] } } = txDataResponse;
     const { from, to, value, timestamp, token, type } = txData;
 
-    if (!(await this.isNotificationNeeded(type, from, token!, value))) return;
+    if (!(await this.isNotificationNeeded(type, from, token, value))) return;
 
     const cutAddress = (addr: string) => addr ? `${addr.slice(0, 5)}...${addr.slice(-5)}` : "";
 
@@ -309,8 +309,8 @@ export class WatcherService {
   private async isNotificationNeeded(
     type: string,
     from: string,
-    token: { address: string },
-    value: { wei: string }
+    token: { address: string } | undefined,
+    value: { ether: number }
   ) {
     if (!SUPPORTED_TX_TYPES.includes(type)) return false;
 
@@ -323,7 +323,7 @@ export class WatcherService {
       return false;
     }
 
-    if (value.wei === "0") return false;
+    if (value.ether === 0) return false;
 
     return true;
   }