diff --git a/build.rs b/build.rs
index 31082c4..fe73aed 100644
--- a/build.rs
+++ b/build.rs
@@ -29,6 +29,7 @@ fn main() {
 fn setup_compiler_flags(build: &mut cc::Build) {
     build
         .static_flag(true)
+        .flag("-O3")
         .flag("-fno-builtin-printf")
         .flag("-fno-builtin-memcmp")
         .flag("-nostdinc")
@@ -62,7 +63,6 @@ fn setup_compiler_flags(build: &mut cc::Build) {
         //     build.flag("-g").flag("-fno-omit-frame-pointer");
         // }
 
-        build.flag("-O3");
     } else if compiler.is_like_gnu() {
         build
             .flag("-nostartfiles")