diff --git a/tuic-client/src/main.rs b/tuic-client/src/main.rs
index cb79481..b6017ee 100644
--- a/tuic-client/src/main.rs
+++ b/tuic-client/src/main.rs
@@ -64,6 +64,8 @@ pub enum Error {
     Connection(#[from] ConnectionError),
     #[error(transparent)]
     Model(#[from] ModelError),
+    #[error("load native certificates error: {0}")]
+    LoadNativeCerts(IoError),
     #[error(transparent)]
     Rustls(#[from] RustlsError),
     #[error("timeout establishing connection")]
diff --git a/tuic-client/src/utils.rs b/tuic-client/src/utils.rs
index e84a0cc..5292a5e 100644
--- a/tuic-client/src/utils.rs
+++ b/tuic-client/src/utils.rs
@@ -30,8 +30,8 @@ pub fn load_certs(paths: Vec<PathBuf>, disable_native: bool) -> Result<RootCertS
     }
 
     if !disable_native {
-        for cert in rustls_native_certs::load_native_certs()? {
-            certs.add(&Certificate(cert.0))?;
+        for cert in rustls_native_certs::load_native_certs().map_err(Error::LoadNativeCerts)? {
+            let _ = certs.add(&Certificate(cert.0));
         }
     }