diff --git a/src/gpio.rs b/src/gpio.rs
index 6600021..f8fcf3f 100644
--- a/src/gpio.rs
+++ b/src/gpio.rs
@@ -219,6 +219,8 @@ impl Pin {
             ffi::pinMode(self.pin_id, mode.into());
         }
 
+        self.pin_mode = mode;
+
         Ok(())
     }