diff --git a/crates/sprimo-tauri/src/main.rs b/crates/sprimo-tauri/src/main.rs
index 2666c1d..abd90ee 100644
--- a/crates/sprimo-tauri/src/main.rs
+++ b/crates/sprimo-tauri/src/main.rs
@@ -464,6 +464,9 @@ fn main() -> Result<(), AppError> {
             if let Ok(mut guard) = tray_state_holder.lock() {
                 *guard = Some(tray_state.clone());
             }
+            if let Some(window) = app.get_webview_window(MAIN_WINDOW_LABEL) {
+                let _ = window.set_shadow(false);
+            }
             if let Ok(snapshot) = runtime_core.snapshot().read() {
                 let _ = app_handle.emit(EVENT_RUNTIME_SNAPSHOT, to_ui_snapshot(&snapshot));
             }
diff --git a/crates/sprimo-tauri/tauri.conf.json b/crates/sprimo-tauri/tauri.conf.json
index 215d032..a36be94 100644
--- a/crates/sprimo-tauri/tauri.conf.json
+++ b/crates/sprimo-tauri/tauri.conf.json
@@ -16,6 +16,7 @@
         "height": 416,
         "decorations": false,
         "transparent": true,
+        "shadow": false,
         "alwaysOnTop": true,
         "resizable": false
       }