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diff --git a/rustlings/exercises/21_macros/macros2.rs b/rustlings/exercises/21_macros/macros2.rs
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+++ b/rustlings/exercises/21_macros/macros2.rs
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+fn main() {
+ my_macro!();
+}
+
+// TODO: Fix the compiler error by moving the whole definition of this macro.
+macro_rules! my_macro {
+ () => {
+ println!("Check out my macro!");
+ };
+}