diff --git a/src/extensions/scratch3_ev3/index.js b/src/extensions/scratch3_ev3/index.js
index cc9ac94fd..ae0ba679e 100644
--- a/src/extensions/scratch3_ev3/index.js
+++ b/src/extensions/scratch3_ev3/index.js
@@ -97,8 +97,6 @@ const Ev3Args = {
     COAST: 0x00,
     BRAKE: 0x01,
     RAMP: 50, // time in milliseconds
-    ONE_BYTE: 4, // length value as a constant
-    FOUR_BYTES: 32, // length value as a constant
     DO_NOT_CHANGE_TYPE: 0
 };