diff --git a/src/camera.rs b/src/camera.rs
index ef4f3f4..b3a9fe2 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -121,6 +121,18 @@ impl Flycam {
         self.aspect = (width as f32) / (height as f32);
     }
 
+    /// disable all key presses
+    pub fn defocus(&mut self) {
+        self.is_world_down_pressed = false;
+        self.is_world_up_pressed = false;
+        self.is_cam_down_pressed = false;
+        self.is_cam_up_pressed = false;
+        self.is_forward_pressed = false;
+        self.is_left_pressed = false;
+        self.is_backward_pressed = false;
+        self.is_right_pressed = false;
+    }
+
     /// apply input and update camera movement
     pub fn update(&mut self) {
         let dt = self.last_update.elapsed();
diff --git a/src/main.rs b/src/main.rs
index 41de749..5c539a7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -250,6 +250,10 @@ impl Application {
         self.flycam.resize(new_size.width, new_size.height);
     }
 
+    pub fn on_lost_focus(&mut self) {
+        self.flycam.defocus();
+    }
+
     pub fn on_surface_lost(&mut self) {
         self.viewport.resize(self.viewport.size);
     }
@@ -441,6 +445,9 @@ fn main() {
                     WindowEvent::ScaleFactorChanged { new_inner_size, .. } => {
                         application.on_resize(**new_inner_size);
                     }
+                    WindowEvent::Focused(false) => {
+                        application.on_lost_focus();
+                    }
                     _ => {}
                 }
             }