diff --git a/cozo-lib-wasm/Cargo.toml b/cozo-lib-wasm/Cargo.toml
index 34cd350d..63f7f0ac 100644
--- a/cozo-lib-wasm/Cargo.toml
+++ b/cozo-lib-wasm/Cargo.toml
@@ -29,6 +29,6 @@ wee_alloc = { version = "0.4.5", optional = true }
 [dev-dependencies]
 wasm-bindgen-test = "0.3.13"
 
-#[profile.release]
-## Tell `rustc` to optimize for small code size.
-#opt-level = "s"
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"