diff --git a/client/src/main/java/com/lmax/solana4j/client/jsonrpc/SolanaJsonRpcClientResponse.java b/client/src/main/java/com/lmax/solana4j/client/jsonrpc/SolanaJsonRpcClientResponse.java
index 6ddd47d6..5154a8cf 100644
--- a/client/src/main/java/com/lmax/solana4j/client/jsonrpc/SolanaJsonRpcClientResponse.java
+++ b/client/src/main/java/com/lmax/solana4j/client/jsonrpc/SolanaJsonRpcClientResponse.java
@@ -35,6 +35,6 @@ public SolanaClientError getError()
     @Override
     public boolean isSuccess()
     {
-        return error != null;
+        return error == null;
     }
 }