diff --git a/Makefile b/Makefile
index 224bdcf..6b4fe64 100644
--- a/Makefile
+++ b/Makefile
@@ -76,6 +76,7 @@ $(DEB_FILE): $(EXTRACT_DIR)/.extracted
 
 	# Copy desktop file and icons
 	@cp $(EXTRACT_DIR)/zed.app/share/applications/zed.desktop $(DEB_DIR)/usr/share/applications/
+	@sed -i '/^\[Desktop Entry\]/a StartupWMClass=dev.zed.Zed' $(DEB_DIR)/usr/share/applications/zed.desktop
 	@cp $(EXTRACT_DIR)/zed.app/share/icons/hicolor/512x512/apps/zed.png $(DEB_DIR)/usr/share/icons/hicolor/512x512/apps/
 	@cp $(EXTRACT_DIR)/zed.app/share/icons/hicolor/1024x1024/apps/zed.png $(DEB_DIR)/usr/share/icons/hicolor/1024x1024/apps/