diff --git a/src/types.jl b/src/types.jl
index d39f21a3..c69cb924 100644
--- a/src/types.jl
+++ b/src/types.jl
@@ -80,8 +80,8 @@ function Options(;
         f_reltol::Real = 0.0,
         g_abstol::Real = 1e-8,
         g_reltol::Real = 1e-8,
-        outer_x_tol = 0.0,
-        outer_f_tol = 0.0,
+        outer_x_tol = nothing,
+        outer_f_tol = nothing,
         outer_g_tol = nothing,
         outer_x_abstol::Real = 0.0,
         outer_x_reltol::Real = 0.0,