diff --git a/src/datetime/mod.rs b/src/datetime/mod.rs
index 1bdda190..2e9203a3 100644
--- a/src/datetime/mod.rs
+++ b/src/datetime/mod.rs
@@ -1087,14 +1087,16 @@ where
 
 /// Accepts a relaxed form of RFC3339.
 /// A space or a 'T' are acepted as the separator between the date and time
-/// parts. Additional spaces are allowed between each component.
+/// parts.
 ///
 /// All of these examples are equivalent:
 /// ```
 /// # use chrono::{DateTime, Utc};
-/// "2012-12-12T12:12:12Z".parse::<DateTime<Utc>>();
-/// "2012-12-12 12:12:12Z".parse::<DateTime<Utc>>();
-/// "2012-  12-12T12:  12:12Z".parse::<DateTime<Utc>>();
+/// "2012-12-12T12:12:12Z".parse::<DateTime<Utc>>()?;
+/// "2012-12-12 12:12:12Z".parse::<DateTime<Utc>>()?;
+/// "2012-12-12 12:12:12+0000".parse::<DateTime<Utc>>()?;
+/// "2012-12-12 12:12:12+00:00".parse::<DateTime<Utc>>()?;
+/// # Ok::<(), chrono::ParseError>(())
 /// ```
 impl str::FromStr for DateTime<Utc> {
     type Err = ParseError;
@@ -1106,14 +1108,16 @@ impl str::FromStr for DateTime<Utc> {
 
 /// Accepts a relaxed form of RFC3339.
 /// A space or a 'T' are acepted as the separator between the date and time
-/// parts. Additional spaces are allowed between each component.
+/// parts.
 ///
 /// All of these examples are equivalent:
 /// ```
 /// # use chrono::{DateTime, Local};
-/// "2012-12-12T12:12:12Z".parse::<DateTime<Local>>();
-/// "2012-12-12 12:12:12Z".parse::<DateTime<Local>>();
-/// "2012-  12-12T12:  12:12Z".parse::<DateTime<Local>>();
+/// "2012-12-12T12:12:12Z".parse::<DateTime<Local>>()?;
+/// "2012-12-12 12:12:12Z".parse::<DateTime<Local>>()?;
+/// "2012-12-12 12:12:12+0000".parse::<DateTime<Local>>()?;
+/// "2012-12-12 12:12:12+00:00".parse::<DateTime<Local>>()?;
+/// # Ok::<(), chrono::ParseError>(())
 /// ```
 #[cfg(feature = "clock")]
 #[cfg_attr(docsrs, doc(cfg(feature = "clock")))]