diff --git a/README.md b/README.md
index 4fedd245f78..9dc8d224b26 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ let dtf = DateTimeFormatter::try_new(
 let date = DateTime::try_new_iso(2020, 9, 12, 12, 35, 0).expect("datetime should be valid");
 let date = date.to_any();
 
-let formatted_date = dtf.format_any_calendar(&date).to_string_lossy();
+let formatted_date = dtf.format_any_calendar(&date).to_string();
 assert_eq!(
     formatted_date,
     "12 de septiembre de 2020, 12:35:00"
diff --git a/tutorials/data_management.md b/tutorials/data_management.md
index f2c472ed6f2..0fe2ee622e2 100644
--- a/tutorials/data_management.md
+++ b/tutorials/data_management.md
@@ -116,7 +116,7 @@ fn main() {
         .expect("datetime should be valid");
     let date = date.to_any();
 
-    let formatted_date = dtf.format_any_calendar(&date).to_string_lossy();
+    let formatted_date = dtf.format_any_calendar(&date).to_string();
 
     println!("📅: {}", formatted_date);
 }
@@ -182,7 +182,7 @@ fn main() {
         .expect("datetime should be valid");
     let date = date.to_any();
 
-    let formatted_date = dtf.format_any_calendar(&date).to_string_lossy();
+    let formatted_date = dtf.format_any_calendar(&date).to_string();
 
     println!("📅: {}", formatted_date);
 }
@@ -234,7 +234,7 @@ fn main() {
     let date = DateTime::try_new_gregorian(2020, 10, 14, 13, 21, 28)
         .expect("datetime should be valid");
 
-    let formatted_date = dtf.format(&date).to_string_lossy();
+    let formatted_date = dtf.format(&date).to_string();
 
     println!("📅: {}", formatted_date);
 }
diff --git a/tutorials/intro.md b/tutorials/intro.md
index e5ac5d77141..73ed5b4b1b5 100644
--- a/tutorials/intro.md
+++ b/tutorials/intro.md
@@ -126,7 +126,7 @@ fn main() {
     // For smaller codesize you can use FixedCalendarDateTimeFormatter<Gregorian> with a DateTime<Gregorian>
     let date = date.to_any();
 
-    let formatted_date = dtf.format_any_calendar(&date).to_string_lossy();
+    let formatted_date = dtf.format_any_calendar(&date).to_string();
 
     println!("📅: {}", formatted_date);
 }
diff --git a/tutorials/intro_interactive.md b/tutorials/intro_interactive.md
index f78429d2b38..348513ba9e0 100644
--- a/tutorials/intro_interactive.md
+++ b/tutorials/intro_interactive.md
@@ -171,7 +171,7 @@ let date_formatter = DateTimeFormatter::try_new(
 println!(
     "Date: {}",
     date_formatter
-        .format_any_calendar(&iso_date.to_any()).to_string_lossy()
+        .format_any_calendar(&iso_date.to_any()).to_string()
 );
 ```
 
diff --git a/tutorials/rust/buffer/src/main.rs b/tutorials/rust/buffer/src/main.rs
index 5b83a653270..100e82611ee 100644
--- a/tutorials/rust/buffer/src/main.rs
+++ b/tutorials/rust/buffer/src/main.rs
@@ -35,7 +35,7 @@ fn main() {
     let datetime = DateTime::try_new_gregorian(2022, 12, 23, 12, 54, 29)
         .expect("constant should be valid datetime");
 
-    let result = formatter.format(&datetime).to_string_lossy();
+    let result = formatter.format(&datetime).to_string();
 
     assert_eq!(result, "၂၀၂၂ ဒီ ၂၃ ၁၂:၅၄:၂၉");
     println!("{result}");