diff --git a/fs.cpp b/fs.cpp
index a02b42919538c54f2fed5345f3e168b38de341d8..d569d98743b99d446098b1c4ebdf570cf5183bc3 100644
--- a/fs.cpp
+++ b/fs.cpp
@@ -7,10 +7,12 @@
 
 #include "fs.h"
 #include "syringe.h"
+#include "syringefilled.h"
 
 using InterruptLock = esp8266::InterruptLock;
 
 extern Syringe syringe;
+extern SyringeFilled syringe_filled;
 
 ESPWebDAVCore* dav = nullptr;
 ESP8266WebServer* http = nullptr;