diff --git a/README.md b/README.md
index 1593777..0f0c589 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Session pool manager for [cryptoki](https://github.com/parallaxsecond/rust-crypt
 ```rust no_run
 use r2d2_cryptoki::{*, cryptoki::{context::*, types::AuthPin}};
 
-let mut pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
+let pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
 pkcs11.initialize(CInitializeArgs::OsThreads).unwrap();
 let slots = pkcs11.get_slots_with_token().unwrap();
 let slot = slots.first().unwrap();
diff --git a/src/lib.rs b/src/lib.rs
index deaca22..23131ea 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,7 +57,7 @@ impl SessionManager {
     /// # Example
     /// ```no_run
     ///  # use r2d2_cryptoki::{*, cryptoki::{context::*, types::AuthPin}};
-    ///  let mut pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
+    ///  let pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
     ///  pkcs11 .initialize(CInitializeArgs::OsThreads).unwrap();
     ///  let slots = pkcs11.get_slots_with_token().unwrap();
     ///  let slot = slots.first().unwrap();
@@ -79,7 +79,7 @@ impl SessionManager {
     /// # Example
     /// ```no_run
     ///  # use r2d2_cryptoki::{*, cryptoki::{context::*, types::AuthPin}};
-    ///  # let mut pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
+    ///  # let pkcs11 = Pkcs11::new("libsofthsm2.so").unwrap();
     ///  # pkcs11.initialize(CInitializeArgs::OsThreads);
     ///  # let slots = pkcs11.get_slots_with_token().unwrap();
     ///  # let slot = slots.first().unwrap();