diff --git a/exercises/09_strings/strings1.rs b/exercises/09_strings/strings1.rs
index de762ebf..6abdbb48 100644
--- a/exercises/09_strings/strings1.rs
+++ b/exercises/09_strings/strings1.rs
@@ -1,10 +1,9 @@
-// Make me compile without changing the function signature!
-
-fn main() {
-    let answer = current_favorite_color();
-    println!("My current favorite color is {}", answer);
-}
-
+// TODO: Fix the compiler error without changing the function signature.
 fn current_favorite_color() -> String {
     "blue"
 }
+
+fn main() {
+    let answer = current_favorite_color();
+    println!("My current favorite color is {answer}");
+}
diff --git a/solutions/09_strings/strings1.rs b/solutions/09_strings/strings1.rs
index 4e181989..f7ba8114 100644
--- a/solutions/09_strings/strings1.rs
+++ b/solutions/09_strings/strings1.rs
@@ -1 +1,9 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+fn current_favorite_color() -> String {
+    // Equivalent to `String::from("blue")`
+    "blue".to_string()
+}
+
+fn main() {
+    let answer = current_favorite_color();
+    println!("My current favorite color is {answer}");
+}