diff --git a/syringefilled.h b/syringefilled.h
index 6e7e6da427932c382d9e5fa880bf80d2c73e7398..7c3df12817a11a83d0cd116051c92c4d2e6052b9 100644
--- a/syringefilled.h
+++ b/syringefilled.h
@@ -34,7 +34,6 @@ class SyringeFilled : public Motor
     String _name_syringe; //Not sure how to manage it
 
     //Syringe_Pump
-    float _screw_thread_mm;
     bool _clockwise_equals_push;
     float _syringe_pump_length_mm;
     float _lead_screw_pitch_mm;