diff --git a/sim/simulation.lua b/sim/simulation.lua
index db9d6cc..d6c8fd2 100644
--- a/sim/simulation.lua
+++ b/sim/simulation.lua
@@ -253,7 +253,7 @@ function Simulation.queuegate(sim, gate)
 end
 
 function Simulation.queuegate_c(sim, cgate)
-	local gate = Simulation.gate_from_cgate(cgate)
+	local gate = Simulation.gate_from_cgate(sim, cgate)
 	Simulation.queuegate(sim, gate)
 end