diff --git a/lib/orbital_maneuvers.ks b/lib/orbital_maneuvers.ks
index 2c41059..fbcfaf2 100644
--- a/lib/orbital_maneuvers.ks
+++ b/lib/orbital_maneuvers.ks
@@ -32,7 +32,7 @@ function circularize {
     local node is NODE(TIME:SECONDS + eta, 0, 0, 0).
     // Prograde burn magnitude is the difference between the required velocity to achieve circular orbit at target's altitude and our actual velocity at the target
     local required_velocity is orbital_velocity_circular(target).
-    set node:prograde to required_velocity - velocityat(SHIP, TIME:seconds + eta):orbit:mag.
+    set node:prograde to required_velocity - orbital_velocity(target).
 
     add node.
     execute_burn(node).