diff --git a/src/MOI_wrapper.jl b/src/MOI_wrapper.jl
index ec735d3..564f113 100644
--- a/src/MOI_wrapper.jl
+++ b/src/MOI_wrapper.jl
@@ -1177,6 +1177,7 @@ function MOI.optimize!(model::Optimizer)
         eval_jac_g_cb, 
         has_hessian ? eval_h_cb : nothing,
         num_linear_constraints,
+        objective_scale == -1 ? :Max : :Min,
         model.options
     )
     options = model.inner.parameters
diff --git a/src/algorithms/sqp_trust_region.jl b/src/algorithms/sqp_trust_region.jl
index 09a0efa..fd39b06 100644
--- a/src/algorithms/sqp_trust_region.jl
+++ b/src/algorithms/sqp_trust_region.jl
@@ -606,7 +606,8 @@ function print(sqp::AbstractSqpTrOptimizer, status_mark = "  ")
     st = ifelse(sqp.feasibility_restoration, "FR", status_mark)
     @printf("%2s%6d", st, sqp.iter)
     @printf("%1s", ifelse(sqp.step_acceptance, "a", "r"))
-    @printf("  %+6.8e", sqp.f)
+    objective_scale = sqp.problem.sense == :Min ? 1 : -1
+    @printf("  %+6.8e", sqp.f * objective_scale)
     @printf("  %+6.8e", sqp.phi)
     @printf("  %+6.8e", sqp.μ)
     @printf("  %+6.8e", norm(sqp.lambda,Inf))
diff --git a/src/model.jl b/src/model.jl
index 979a082..397b374 100644
--- a/src/model.jl
+++ b/src/model.jl
@@ -49,6 +49,7 @@ mutable struct Model{T,TD} <: AbstractSqpModel
         eval_jac_g::Function,
         eval_h::Union{Function,Nothing},
         num_linear_constraints::Int,
+        sense::Symbol, # {:Min, :Max}
         parameters::Parameters
     ) where {T, TD<:AbstractArray{T}} = new{T,TD}(
         n, m,
@@ -60,7 +61,7 @@ mutable struct Model{T,TD} <: AbstractSqpModel
         -5,
         eval_f, eval_g, eval_grad_f, eval_jac_g, eval_h, 
         num_linear_constraints,
-        nothing, :Min,
+        nothing, sense,
         parameters,
         Dict{String,Any}()
     )