diff --git a/crates/krb5_rs/src/ccache.rs b/crates/krb5_rs/src/ccache.rs
index 28bca83..9aaa37c 100644
--- a/crates/krb5_rs/src/ccache.rs
+++ b/crates/krb5_rs/src/ccache.rs
@@ -30,7 +30,7 @@ impl<'a> CCache<'a> {
     pub fn resolve(context: &'a Context, cc_name: &str) -> Result<CCache<'a>> {
         let mut ccache: MaybeUninit<krb5_ccache> = MaybeUninit::uninit();
 
-        let cc_name = CString::new(cc_name).unwrap();
+        let cc_name = CString::new(cc_name).map_err(|_| Krb5Error::StringConversionError)?;
 
         let error_code =
             unsafe { krb5_cc_resolve(context.inner, cc_name.as_ptr(), ccache.as_mut_ptr()) };
diff --git a/crates/krb5_rs/src/credentials.rs b/crates/krb5_rs/src/credentials.rs
index 8c5d8d8..f5d90d0 100644
--- a/crates/krb5_rs/src/credentials.rs
+++ b/crates/krb5_rs/src/credentials.rs
@@ -18,7 +18,7 @@ impl<'a> Credentials<'a> {
         password: &str,
     ) -> Result<Credentials<'a>> {
         let mut credentials: MaybeUninit<krb5_creds> = MaybeUninit::uninit();
-        let password = CString::new(password).map_err(|_err| Krb5Error::StringConversionError)?;
+        let password = CString::new(password).map_err(|_| Krb5Error::StringConversionError)?;
         let error_code = unsafe {
             krb5_get_init_creds_password(
                 context.inner,
diff --git a/crates/krb5_rs/src/gssapi.rs b/crates/krb5_rs/src/gssapi.rs
index a330970..aa5cd9f 100644
--- a/crates/krb5_rs/src/gssapi.rs
+++ b/crates/krb5_rs/src/gssapi.rs
@@ -58,7 +58,7 @@ pub fn import_name(principal: &str, input_name_type: &str) -> Result<Name, Strin
 pub fn krb5_ccache_name(ccache_name: &str) -> Result<(), String> {
     let mut minor = 0;
     let ccache_name =
-        CString::new(ccache_name).map_err(|_err| "Failed to convert ccache name to a c string")?;
+        CString::new(ccache_name).map_err(|_| "Failed to convert ccache name to a c string")?;
 
     let error_code =
         unsafe { gss_krb5_ccache_name(&mut minor, ccache_name.as_ptr(), std::ptr::null_mut()) };
diff --git a/crates/krb5_rs/src/keytab.rs b/crates/krb5_rs/src/keytab.rs
index 9dfe38f..041fd79 100644
--- a/crates/krb5_rs/src/keytab.rs
+++ b/crates/krb5_rs/src/keytab.rs
@@ -14,7 +14,7 @@ pub struct Keytab<'a> {
 impl<'a> Keytab<'a> {
     pub fn resolve(context: &'a Context, name: &str) -> Result<Keytab<'a>> {
         let mut keytab: MaybeUninit<krb5_keytab> = MaybeUninit::uninit();
-        let name = CString::new(name).unwrap();
+        let name = CString::new(name).map_err(|_| Krb5Error::StringConversionError)?;
         let error_code =
             unsafe { krb5_kt_resolve(context.inner, name.as_ptr(), keytab.as_mut_ptr()) };
         Krb5Error::exit_if_library_error(context, error_code)?;