diff --git a/package/src/source/main.rs b/package/src/source/main.rs
index 7ac8c4990d..842c85c7eb 100644
--- a/package/src/source/main.rs
+++ b/package/src/source/main.rs
@@ -68,7 +68,7 @@ impl MainFile {
             r#"// The '{}' main function.
 function main(a: u32, b: u32) -> u32 {{
     let c: u32 = a + b;
-    return c
+    return c;
 }}
 "#,
             self.package_name