diff --git a/lib/plugins/wallet/geth/base.js b/lib/plugins/wallet/geth/base.js
index 0aabacb8..ebb5e0d0 100644
--- a/lib/plugins/wallet/geth/base.js
+++ b/lib/plugins/wallet/geth/base.js
@@ -73,7 +73,7 @@ function balance (account, cryptoCode) {
 
 const pendingBalance = address => {
   const promises = [_balance(true, address), _balance(false, address)]
-  return Promise.all(promises).then(([pending, confirmed]) => pending - confirmed)
+  return Promise.all(promises).then(([pending, confirmed]) => pending.minus(confirmed))
 }
 const confirmedBalance = address => _balance(false, address)