diff --git a/SL.jl b/SL.jl
index 933cb5b..4f2bc3a 100644
--- a/SL.jl
+++ b/SL.jl
@@ -140,7 +140,7 @@ function main()
     G, S = SL_generatingset(N, p)
     info(logger, G)
     info(logger, "Symmetric generating set of size $(length(S))")
-    Id = G()
+    Id = one(G)
 
     solver = SCSSolver(eps=tol, max_iters=iterations, linearsolver=SCS.Direct)