diff --git a/v3/UNRELEASED_CHANGELOG.md b/v3/UNRELEASED_CHANGELOG.md
index 8e4648038..50a108fca 100644
--- a/v3/UNRELEASED_CHANGELOG.md
+++ b/v3/UNRELEASED_CHANGELOG.md
@@ -23,6 +23,7 @@ After processing, the content will be moved to the main changelog and this file
 
 ## Fixed
 <!-- Bug fixes -->
+- Fix Windows systray icon not defaulting to application icon when no custom icon is provided (#4704)
 
 ## Deprecated
 <!-- Soon-to-be removed features -->
diff --git a/v3/pkg/application/systemtray_windows.go b/v3/pkg/application/systemtray_windows.go
index 5b29dd4f0..fd9ced4d1 100644
--- a/v3/pkg/application/systemtray_windows.go
+++ b/v3/pkg/application/systemtray_windows.go
@@ -225,7 +225,7 @@ func (s *windowsSystemTray) run() {
 	s.uid = uint32(s.parent.id)
 
 	// Resolve the base icons once so we can reuse them for light/dark modes
-	defaultIcon := getNativeApplication().windowClass.Icon
+	defaultIcon := w32.LoadIconWithResourceID(w32.GetModuleHandle(""), w32.RT_ICON)
 
 	// Priority: custom icon > default app icon > built-in icon
 	if s.parent.icon != nil {