diff --git a/cdp/wallet_address.py b/cdp/wallet_address.py
index 58e86e8..e8d801d 100644
--- a/cdp/wallet_address.py
+++ b/cdp/wallet_address.py
@@ -357,9 +357,11 @@ def quote_fund(self, amount: Number | Decimal | str, asset_id: str) -> FundQuote
             FundQuote: The fund quote object.
 
         """
+        normalized_amount = Decimal(amount)
+
         return FundQuote.create(
             address_id=self.address_id,
-            amount=str(amount),
+            amount=str(normalized_amount),
             asset_id=asset_id,
             network_id=self.network_id,
             wallet_id=self.wallet_id,