diff --git a/Sources/EOSIO/ABIDecoder.swift b/Sources/EOSIO/ABIDecoder.swift
index 8d894d9..9a810f6 100644
--- a/Sources/EOSIO/ABIDecoder.swift
+++ b/Sources/EOSIO/ABIDecoder.swift
@@ -109,7 +109,13 @@ public extension ABIDecoder {
         case is UInt.Type:
             return UInt(try self.readVaruint()) as! T
         case let abiType as ABIDecodable.Type:
-            return try abiType.init(fromAbi: self) as! T
+           let decodedAbiType = try abiType.init(fromAbi: self)
+           // Instead of forcefully casting, verify the type at runtime.
+           if let result = decodedAbiType as? T {
+               return result
+           } else {
+               throw Error.typeNotConformingToABIDecodable(type)
+           }
         default:
             throw Error.typeNotConformingToABIDecodable(type)
         }