diff --git a/src/bus.rs b/src/bus.rs
index 81c4aab..a5fb63c 100644
--- a/src/bus.rs
+++ b/src/bus.rs
@@ -51,15 +51,17 @@ impl Bus {
                     0x00 => {
                         // we're reading the button states
                         let mut byte: u8 = 0x00;
-                        let mut mouse_lock = self.mouse.lock().expect("failed to lock the mouse mutex");
-                        if mouse_lock.click {
-                            byte |= 0b01;
-                            mouse_lock.click = false;
+                        let mouse_lock = self.mouse.lock().expect("failed to lock the mouse mutex");
+                        if mouse_lock.clicked {
+                            byte |= 0b001;
+                        }
+                        if mouse_lock.released {
+                            byte |= 0b010;
                         }
                         if mouse_lock.held {
-                            byte |= 0b10;
+                            byte |= 0b100;
                         } else {
-                            byte &= !0b10;
+                            byte &= !0b100;
                         }
                         byte as u32
                     }
@@ -145,8 +147,9 @@ impl Bus {
                     0x00 => {
                         // we're setting the button states
                         let mut mouse_lock = self.mouse.lock().expect("failed to lock the mouse mutex");
-                        mouse_lock.click = word & (1 << 0) != 0;
-                        mouse_lock.held = word & (1 << 1) != 0;
+                        mouse_lock.clicked = word & (1 << 0) != 0;
+                        mouse_lock.released = word & (1 << 1) != 0;
+                        mouse_lock.held = word & (1 << 2) != 0;
                     }
                     0x01 => {
                         // we're setting the position
diff --git a/src/main.rs b/src/main.rs
index bb5a5eb..1b7e895 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -217,9 +217,13 @@ fn main() {
             let mut mouse_lock = mouse.lock().expect("failed to lock the mouse mutex");
             mouse_lock.x = mouse_pixel.0;
             mouse_lock.y = mouse_pixel.1;
+            if mouse_lock.held && !input.mouse_held(0) {
+                // mouse button was released this frame
+                mouse_lock.released = true;
+            }
             mouse_lock.held = input.mouse_held(0);
             if input.mouse_pressed(0) {
-                mouse_lock.click = true;
+                mouse_lock.clicked = true;
             }
         }
     });
diff --git a/src/mouse.rs b/src/mouse.rs
index 6ae653d..f6846f7 100644
--- a/src/mouse.rs
+++ b/src/mouse.rs
@@ -3,12 +3,13 @@
 pub struct Mouse {
     pub x: u16,
     pub y: u16,
-    pub click: bool,
+    pub clicked: bool,
+    pub released: bool,
     pub held: bool,
 }
 
 impl Mouse {
     pub fn new() -> Self {
-        Mouse { x: 0, y: 0, click: false, held: false }
+        Mouse { x: 0, y: 0, clicked: false, released: false, held: false }
     }
 }
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