diff --git a/skf-rs/src/engine/app.rs b/skf-rs/src/engine/app.rs
index 44518fb..238ade3 100644
--- a/skf-rs/src/engine/app.rs
+++ b/skf-rs/src/engine/app.rs
@@ -63,7 +63,7 @@ impl Drop for SkfAppImpl {
     }
 }
 impl AppSecurity for SkfAppImpl {
-    #[instrument]
+    #[instrument(skip(old_pin, new_pin))]
     fn change_pin(&self, pin_type: u8, old_pin: &str, new_pin: &str) -> crate::Result<()> {
         let func = self.symbols.pin_change.as_ref().expect("Symbol not load");
         let old_pin = param::as_cstring("old_pin", old_pin)?;
diff --git a/skf-rs/src/engine/device.rs b/skf-rs/src/engine/device.rs
index ea08b05..3311d81 100644
--- a/skf-rs/src/engine/device.rs
+++ b/skf-rs/src/engine/device.rs
@@ -422,7 +422,7 @@ impl AppManager for SkfDeviceImpl {
         Ok(list)
     }
 
-    #[instrument]
+    #[instrument(skip(attr))]
     fn create_app(&self, name: &str, attr: &AppAttr) -> Result<Box<dyn SkfApp>> {
         let func = self.symbols.app_create.as_ref().expect("Symbol not load");
         let c_name = param::as_cstring("name", name)?;