diff --git a/compiler/generate_precompile.jl b/compiler/generate_precompile.jl
index ac30745..b98c6bf 100644
--- a/compiler/generate_precompile.jl
+++ b/compiler/generate_precompile.jl
@@ -160,7 +160,7 @@ for (lin_solver_id,print_level, max_iters) in cases
 	madnlp_c_set_option_int(s, unsafe_convert(Ptr{Int8},"lin_solver_id"), lin_solver_id)
 	madnlp_c_set_option_int(s, unsafe_convert(Ptr{Int8},"max_iters"), max_iters)
 	madnlp_c_set_option_int(s, unsafe_convert(Ptr{Int8},"print_level"), print_level)
-	madnlp_c_set_option_bool(s, unsafe_convert(Ptr{Int8},"minimize"), minimize)
+	madnlp_c_set_option_bool(s, unsafe_convert(Ptr{Int8},"minimize"), Int64(minimize))
 
 	Cret = madnlp_c_solve(s)
 
diff --git a/src/MadNLP_C.jl b/src/MadNLP_C.jl
index 8e6c577..57ddb10 100644
--- a/src/MadNLP_C.jl
+++ b/src/MadNLP_C.jl
@@ -376,7 +376,7 @@ end
 
 Base.@ccallable function madnlp_c_set_option_bool(s::Ptr{MadnlpCSolver}, name::Ptr{Cchar}, val::Int64)::Cint
   try
-    set_option(s, unsafe_string(name), Bool(val))
+    set_option(s, unsafe_string(name), val)
   catch e
     return 1
   end