diff --git a/compiler/gen/src/llvm/build.rs b/compiler/gen/src/llvm/build.rs
index 90486517d1..94f2d6671f 100644
--- a/compiler/gen/src/llvm/build.rs
+++ b/compiler/gen/src/llvm/build.rs
@@ -549,7 +549,7 @@ pub fn construct_optimization_passes<'a>(
             pmb.set_optimization_level(OptimizationLevel::None);
         }
         OptLevel::Optimize => {
-            pmb.set_optimization_level(OptimizationLevel::Less);
+            pmb.set_optimization_level(OptimizationLevel::Aggressive);
             // this threshold seems to do what we want
             pmb.set_inliner_with_threshold(275);