diff --git a/packages/yoroi-extension/app/containers/wallet/staking/SeizaFetcher.js b/packages/yoroi-extension/app/containers/wallet/staking/SeizaFetcher.js
index 1de179df2c..cdb9b2e29e 100644
--- a/packages/yoroi-extension/app/containers/wallet/staking/SeizaFetcher.js
+++ b/packages/yoroi-extension/app/containers/wallet/staking/SeizaFetcher.js
@@ -28,7 +28,7 @@ export type PoolData = {|
   +ticker?: string,
   +avatar?: string,
   +roa?: string,
-  +poolSize?: number,
+  +poolSize?: string,
   +share?: string,
   +websiteUrl?: string,
   +socialLinks?: SocialLinks,