diff --git a/src/key/keystate.rs b/src/key/keystate.rs
index 4563dcf..ac5a426 100644
--- a/src/key/keystate.rs
+++ b/src/key/keystate.rs
@@ -1,6 +1,6 @@
 use std::ffi::OsString;
 
-use winapi::um::winuser::{GetKeyNameTextW, KBDLLHOOKSTRUCT, LLKHF_ALTDOWN, LLKHF_EXTENDED};
+use winapi::um::winuser::{GetKeyNameTextW, KBDLLHOOKSTRUCT, LLKHF_EXTENDED};
 use wio::wide::FromWide;
 
 #[allow(clippy::struct_excessive_bools)]
@@ -37,18 +37,15 @@ impl KeyState {
         match key.vkCode {
             160 | 161 => self.shift_down = key_down,
             162 | 163 => self.ctrl_down = key_down,
+            164 | 165 => self.alt_down = key_down,
             91 => self.win_down = key_down,
-            _ => {}
-        }
-
-        if key.flags & LLKHF_ALTDOWN != 0 {
-            self.alt_down = key_down
+            _ => {},
         }
     }
 
     /// true if the key is an auxiliary key like shift, control or the windows key
     pub fn is_aux_key(&self) -> bool {
-        matches!(self.kbdllstruct.vkCode, 160 | 161 | 162 | 163 | 91)
+        matches!(self.kbdllstruct.vkCode, 160..=165 | 91)
     }
 
     #[no_mangle]