diff --git a/src/AP_WS_Connection.cpp b/src/AP_WS_Connection.cpp
index 6dba49bb..7817a141 100644
--- a/src/AP_WS_Connection.cpp
+++ b/src/AP_WS_Connection.cpp
@@ -7,6 +7,7 @@
 #include <Poco/Net/Context.h>
 #include <Poco/Net/HTTPServerRequestImpl.h>
 #include <Poco/Net/HTTPServerResponseImpl.h>
+#include <Poco/JSON/JSONException.h>
 #include <Poco/Net/NetException.h>
 #include <Poco/Net/SSLException.h>
 #include <Poco/Net/SecureStreamSocketImpl.h>