diff --git a/examples/minipilot.jl b/examples/minipilot.jl
index 9d6b6b29..226a3173 100644
--- a/examples/minipilot.jl
+++ b/examples/minipilot.jl
@@ -45,10 +45,10 @@ viewer::Viewer3D = Viewer3D(SHOW_KITE)
 PARKING::Bool = false
 
 steps = 0
-if ! @isdefined T;        const T = zeros(Int64(MAX_TIME/dt)); end
-if ! @isdefined DELTA_T;  const DELTA_T = zeros(Int64(MAX_TIME/dt)); end
-if ! @isdefined STEERING; const STEERING = zeros(Int64(MAX_TIME/dt)); end
-if ! @isdefined DEPOWER_; const DEPOWER_ = zeros(Int64(MAX_TIME/dt)); end
+T::Vector{Float64} = zeros(Int64(MAX_TIME/dt))
+DELTA_T::Vector{Float64} = zeros(Int64(MAX_TIME/dt))
+STEERING::Vector{Float64}      = zeros(Int64(MAX_TIME/dt))
+DEPOWER_::Vector{Float64}      = zeros(Int64(MAX_TIME/dt))
 LAST_I::Int64=0
 
 function simulate(integrator, stopped=true)