diff --git a/crates/libs/implement/src/lib.rs b/crates/libs/implement/src/lib.rs
index 3aa61ae78b..043d1b1762 100644
--- a/crates/libs/implement/src/lib.rs
+++ b/crates/libs/implement/src/lib.rs
@@ -27,10 +27,8 @@ use quote::{quote, ToTokens};
 ///     }
 /// }
 ///
-/// fn main() {
-///     let object: IValue = Value(123).into();
-///     // Call interface methods...
-/// }
+/// let object: IValue = Value(123).into();
+/// // Call interface methods...
 /// ```
 #[proc_macro_attribute]
 pub fn implement(
diff --git a/crates/libs/interface/src/lib.rs b/crates/libs/interface/src/lib.rs
index 77c11d25c7..04b5234bc2 100644
--- a/crates/libs/interface/src/lib.rs
+++ b/crates/libs/interface/src/lib.rs
@@ -28,10 +28,8 @@ use syn::spanned::Spanned;
 ///     }
 /// }
 ///
-/// fn main() {
-///     let object: IValue = Value(123).into();
-///     // Call interface methods...
-/// }
+/// let object: IValue = Value(123).into();
+/// // Call interface methods...
 /// ```
 #[proc_macro_attribute]
 pub fn interface(