diff --git a/src/format/mod.rs b/src/format/mod.rs
index 83405d3..1099f18 100644
--- a/src/format/mod.rs
+++ b/src/format/mod.rs
@@ -318,30 +318,25 @@ enum ParseErrorKind {
 /// Same to `Result<T, ParseError>`.
 pub type ParseResult<T> = Result<T, ParseError>;
 
-impl ParseError {
-    fn description(&self) -> &str {
-        match self.0 {
-            ParseErrorKind::OutOfRange => "input is out of range",
-            ParseErrorKind::Impossible => "no possible date and time matching input",
-            ParseErrorKind::NotEnough => "input is not enough for unique date and time",
-            ParseErrorKind::Invalid => "input contains invalid characters",
-            ParseErrorKind::TooShort => "premature end of input",
-            ParseErrorKind::TooLong => "trailing input",
-            ParseErrorKind::BadFormat => "bad or unsupported format string",
-        }
-    }
-}
-
 impl fmt::Display for ParseError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        self.description().fmt(f)
+        match self.0 {
+            ParseErrorKind::OutOfRange => write!(f, "input is out of range"),
+            ParseErrorKind::Impossible => write!(f, "no possible date and time matching input"),
+            ParseErrorKind::NotEnough => write!(f, "input is not enough for unique date and time"),
+            ParseErrorKind::Invalid => write!(f, "input contains invalid characters"),
+            ParseErrorKind::TooShort => write!(f, "premature end of input"),
+            ParseErrorKind::TooLong => write!(f, "trailing input"),
+            ParseErrorKind::BadFormat => write!(f, "bad or unsupported format string"),
+        }
     }
 }
 
 #[cfg(any(feature = "std", test))]
 impl Error for ParseError {
+    #[allow(deprecated)]
     fn description(&self) -> &str {
-        self.description()
+        "parser error, see to_string() for details"
     }
 }
 
diff --git a/src/oldtime.rs b/src/oldtime.rs
index bed8136..1cc8a15 100644
--- a/src/oldtime.rs
+++ b/src/oldtime.rs
@@ -393,22 +393,17 @@ impl fmt::Display for Duration {
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct OutOfRangeError(());
 
-impl OutOfRangeError {
-    fn description(&self) -> &str {
-        "Source duration value is out of range for the target type"
-    }
-}
-
 impl fmt::Display for OutOfRangeError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}", self.description())
+        write!(f, "Source duration value is out of range for the target type")
     }
 }
 
 #[cfg(any(feature = "std", test))]
 impl Error for OutOfRangeError {
+    #[allow(deprecated)]
     fn description(&self) -> &str {
-        self.description()
+        "out of range error"
     }
 }