diff --git a/crates/cli/src/tasks/mod.rs b/crates/cli/src/tasks/mod.rs
index 26e6425e2af..1c79c4f8101 100644
--- a/crates/cli/src/tasks/mod.rs
+++ b/crates/cli/src/tasks/mod.rs
@@ -27,7 +27,7 @@ pub fn build(
 
     if lang == ModuleLanguage::Javascript {
         Ok((output_path, "Js"))
-    } else if !build_debug {
+    } else if build_debug {
         Ok((output_path, "Wasm"))
     } else {
         // for release builds, optimize wasm modules with wasm-opt