diff --git a/pkcs1/src/traits.rs b/pkcs1/src/traits.rs
index cd3d04e21..c759b3f67 100644
--- a/pkcs1/src/traits.rs
+++ b/pkcs1/src/traits.rs
@@ -119,7 +119,7 @@ pub trait EncodeRsaPrivateKey {
         Ok(self.to_pkcs1_der()?.write_der_file(path)?)
     }
 
-    /// Write ASN.1 DER-encoded PKCS#1 private key to the given path.
+    /// Write ASN.1 PEM-encoded PKCS#1 private key to the given path.
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_pkcs1_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
         let doc = self.to_pkcs1_der()?;
@@ -146,7 +146,7 @@ pub trait EncodeRsaPublicKey {
         Ok(self.to_pkcs1_der()?.write_der_file(path)?)
     }
 
-    /// Write ASN.1 DER-encoded public key to the given path.
+    /// Write ASN.1 PEM-encoded public key to the given path.
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_pkcs1_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
         let doc = self.to_pkcs1_der()?;
diff --git a/pkcs8/src/traits.rs b/pkcs8/src/traits.rs
index f6165f696..9cd4116d6 100644
--- a/pkcs8/src/traits.rs
+++ b/pkcs8/src/traits.rs
@@ -138,7 +138,7 @@ pub trait EncodePrivateKey {
         Ok(self.to_pkcs8_der()?.write_der_file(path)?)
     }
 
-    /// Write ASN.1 DER-encoded PKCS#8 private key to the given path
+    /// Write ASN.1 PEM-encoded PKCS#8 private key to the given path
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_pkcs8_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
         let doc = self.to_pkcs8_der()?;
diff --git a/sec1/src/traits.rs b/sec1/src/traits.rs
index 304019e3c..ce72ad3b5 100644
--- a/sec1/src/traits.rs
+++ b/sec1/src/traits.rs
@@ -77,7 +77,7 @@ pub trait EncodeEcPrivateKey {
         Ok(self.to_sec1_der()?.write_der_file(path)?)
     }
 
-    /// Write ASN.1 DER-encoded SEC1 private key to the given path.
+    /// Write ASN.1 PEM-encoded SEC1 private key to the given path.
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_sec1_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
         let doc = self.to_sec1_der()?;
diff --git a/spki/src/traits.rs b/spki/src/traits.rs
index 764b02a4a..f80bf69d7 100644
--- a/spki/src/traits.rs
+++ b/spki/src/traits.rs
@@ -86,7 +86,7 @@ pub trait EncodePublicKey {
         Ok(self.to_public_key_der()?.write_der_file(path)?)
     }
 
-    /// Write ASN.1 DER-encoded public key to the given path
+    /// Write ASN.1 PEM-encoded public key to the given path
     #[cfg(all(feature = "pem", feature = "std"))]
     fn write_public_key_pem_file(
         &self,