diff --git a/libfreerdp/core/gateway/rpc_client.c b/libfreerdp/core/gateway/rpc_client.c
index 9a11c8453..6fd93bb60 100644
--- a/libfreerdp/core/gateway/rpc_client.c
+++ b/libfreerdp/core/gateway/rpc_client.c
@@ -987,6 +987,9 @@ int rpc_in_channel_send_pdu(RpcInChannel* inChannel, const BYTE* buffer, size_t
 		return -1;
 
 	clientCall = rpc_client_call_find_by_id(inChannel->common.client, header.call_id);
+	if (!clientCall)
+		return -1;
+
 	clientCall->State = RPC_CLIENT_CALL_STATE_DISPATCHED;
 
 	/*