diff --git a/crates/gpui/src/platform/windows/events.rs b/crates/gpui/src/platform/windows/events.rs
index 7ae160721042fa19af0ecda088c62632c10833e8..22b42d79958631ee57be15d3a0d88203b5e6c7a3 100644
--- a/crates/gpui/src/platform/windows/events.rs
+++ b/crates/gpui/src/platform/windows/events.rs
@@ -547,7 +547,7 @@ fn handle_mouse_horizontal_wheel_msg(
         let wheel_scroll_chars = lock.mouse_wheel_settings.wheel_scroll_chars;
         drop(lock);
         let wheel_distance =
-            (wparam.signed_hiword() as f32 / WHEEL_DELTA as f32) * wheel_scroll_chars as f32;
+            (-wparam.signed_hiword() as f32 / WHEEL_DELTA as f32) * wheel_scroll_chars as f32;
         let mut cursor_point = POINT {
             x: lparam.signed_loword().into(),
             y: lparam.signed_hiword().into(),