From 704914be08d0ec6398bd8bec9b1e04103ea0395d Mon Sep 17 00:00:00 2001
From: Taylor Gerring <taylor.gerring@gmail.com>
Date: Thu, 12 Mar 2015 00:01:18 -0500
Subject: [PATCH] Check for existance of key before delete

---
 rpc/api.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/rpc/api.go b/rpc/api.go
index 90e5dcf37..ba6c54d64 100644
--- a/rpc/api.go
+++ b/rpc/api.go
@@ -167,7 +167,10 @@ func (self *EthereumApi) NewFilter(args *FilterOptions, reply *interface{}) erro
 }
 
 func (self *EthereumApi) UninstallFilter(id int, reply *interface{}) error {
-	delete(self.logs, id)
+	if _, ok := self.logs[id]; ok {
+		delete(self.logs, id)
+	}
+
 	self.filterManager.UninstallFilter(id)
 	*reply = true
 	return nil