diff --git a/rskj-core/src/main/java/co/rsk/rpc/netty/JsonRpcWeb3ServerHandler.java b/rskj-core/src/main/java/co/rsk/rpc/netty/JsonRpcWeb3ServerHandler.java
index dbb8029ed5e..d15decdc701 100644
--- a/rskj-core/src/main/java/co/rsk/rpc/netty/JsonRpcWeb3ServerHandler.java
+++ b/rskj-core/src/main/java/co/rsk/rpc/netty/JsonRpcWeb3ServerHandler.java
@@ -107,6 +107,8 @@ protected void channelRead0(ChannelHandlerContext ctx, ByteBufHolder request) th
             int errorCode = ErrorResolver.JsonError.CUSTOM_SERVER_ERROR_LOWER;
             responseContent = buildErrorContent(errorCode, unexpectedErrorMsg);
             responseCode = errorCode;
+        } finally {
+            ReflectionUtil.clearCache();
         }
 
         ctx.fireChannelRead(new Web3Result(