diff --git a/WireGuard/WireGuard/UI/macOS/Info.plist b/WireGuard/WireGuard/UI/macOS/Info.plist
index 3a4ad18..a7ff855 100644
--- a/WireGuard/WireGuard/UI/macOS/Info.plist
+++ b/WireGuard/WireGuard/UI/macOS/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>LSMultipleInstancesProhibited</key>
+	<true/>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleExecutable</key>