diff --git a/julia/main.jl b/julia/main.jl
index a15262b..dbe2169 100644
--- a/julia/main.jl
+++ b/julia/main.jl
@@ -2,7 +2,7 @@ include("PolyCube.jl")
 
 import JSON: json
 
-function main(maxsize::int)
+function main(maxsize::Int)
     root_pcube = PolyCube([(0, 0, 0)], [(0, 0, 0)])
 
     todo = Vector{Coord}(undef, 0)