diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b3b767f..2bb45197 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@
 - On iOS and Android, `set_inner_size` is now a no-op instead of a runtime crash.
 - On Android, fix `ControlFlow::Poll` not polling the Android event queue.
 - On macOS, add `NSWindow.hasShadow` support.
+- On Web, fix vertical mouse wheel scrolling being inverted.
 - **Breaking:** On Web, `set_cursor_position` and `set_cursor_grab` will now always return an error.
 - **Breaking:** `PixelDelta` scroll events now return a `PhysicalPosition`.
 - On NetBSD, fixed crash due to incorrect detection of the main thread.
diff --git a/src/platform_impl/web/stdweb/event.rs b/src/platform_impl/web/stdweb/event.rs
index 8464c616..d57f9bb5 100644
--- a/src/platform_impl/web/stdweb/event.rs
+++ b/src/platform_impl/web/stdweb/event.rs
@@ -32,7 +32,7 @@ pub fn mouse_position(event: &impl IMouseEvent) -> LogicalPosition<f64> {
 
 pub fn mouse_scroll_delta(event: &MouseWheelEvent) -> Option<MouseScrollDelta> {
     let x = event.delta_x();
-    let y = event.delta_y();
+    let y = -event.delta_y();
 
     match event.delta_mode() {
         MouseWheelDeltaMode::Line => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),
diff --git a/src/platform_impl/web/web_sys/event.rs b/src/platform_impl/web/web_sys/event.rs
index a0641841..316b4f27 100644
--- a/src/platform_impl/web/web_sys/event.rs
+++ b/src/platform_impl/web/web_sys/event.rs
@@ -31,7 +31,7 @@ pub fn mouse_position(event: &MouseEvent) -> LogicalPosition<f64> {
 
 pub fn mouse_scroll_delta(event: &WheelEvent) -> Option<MouseScrollDelta> {
     let x = event.delta_x();
-    let y = event.delta_y();
+    let y = -event.delta_y();
 
     match event.delta_mode() {
         WheelEvent::DOM_DELTA_LINE => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),