diff --git a/src/plugins/meson-templates/resources/src/application-gtk4.vala b/src/plugins/meson-templates/resources/src/application-gtk4.vala
index 866f5ebe2b83546cc4b97ec27947c48fd02dcd9b..9ac33e6393947501d497f768bcd42733500f951d 100644
--- a/src/plugins/meson-templates/resources/src/application-gtk4.vala
+++ b/src/plugins/meson-templates/resources/src/application-gtk4.vala
@@ -1,40 +1,40 @@
 {{include "license.vala"}}
 
 namespace {{PreFix}} {
-	public class Application : {{if is_adwaita}}Adw{{else}}Gtk{{end}}.Application {
-		private ActionEntry[] APP_ACTIONS = {
-			{ "about", on_about_action },
-			{ "preferences", on_preferences_action },
-			{ "quit", quit }
-		};
+    public class Application : {{if is_adwaita}}Adw{{else}}Gtk{{end}}.Application {
+        private ActionEntry[] APP_ACTIONS = {
+            { "about", this.on_about_action },
+            { "preferences", this.on_preferences_action },
+            { "quit", this.quit }
+        };
 
 
-		public Application () {
-			Object (application_id: "{{appid}}", flags: ApplicationFlags.FLAGS_NONE);
+        public Application () {
+            Object (application_id: "{{appid}}", flags: ApplicationFlags.FLAGS_NONE);
 
-			this.add_action_entries(this.APP_ACTIONS, this);
-			this.set_accels_for_action("app.quit", {"<primary>q"});
-		}
+            this.add_action_entries (this.APP_ACTIONS, this);
+            this.set_accels_for_action ("app.quit", {"<primary>q"});
+        }
 
-		public override void activate () {
-			base.activate();
-			var win = this.active_window;
-			if (win == null) {
-				win = new {{PreFix}}.Window (this);
-			}
-			win.present ();
-		}
+        public override void activate () {
+            base.activate ();
+            var win = this.active_window;
+            if (win == null) {
+                win = new {{PreFix}}.Window (this);
+            }
+            win.present ();
+        }
 
-		private void on_about_action () {
-			string[] authors = {"{{author}}"};
-			Gtk.show_about_dialog(this.active_window,
-				                  "program-name", "{{name}}",
-				                  "authors", authors,
-				                  "version", "{{project_version}}");
-		}
+        private void on_about_action () {
+            string[] authors = { "{{author}}" };
+            Gtk.show_about_dialog (this.active_window,
+                                   "program-name", "{{name}}",
+                                   "authors", authors,
+                                   "version", "{{project_version}}");
+        }
 
-		private void on_preferences_action () {
-			message("app.preferences action activated");
-		}
-	}
+        private void on_preferences_action () {
+            message ("app.preferences action activated");
+        }
+    }
 }
diff --git a/src/plugins/meson-templates/resources/src/main-gtk4.vala b/src/plugins/meson-templates/resources/src/main-gtk4.vala
index e8a05c989a6c4447c3d6079d6317ac39d8680ed2..5083b116f50121cade8f2da7a618e9f33ba2faf1 100644
--- a/src/plugins/meson-templates/resources/src/main-gtk4.vala
+++ b/src/plugins/meson-templates/resources/src/main-gtk4.vala
@@ -1,6 +1,6 @@
 {{include "license.vala"}}
 
 int main (string[] args) {
-	var app = new {{PreFix}}.Application ();
-	return app.run (args);
+    var app = new {{PreFix}}.Application ();
+    return app.run (args);
 }
diff --git a/src/plugins/meson-templates/resources/src/window-gtk4.vala b/src/plugins/meson-templates/resources/src/window-gtk4.vala
index 7ef3be4106abea2867041f3f54878f564513cb11..4cacdb12f052d7803173501b271892935cd0caca 100644
--- a/src/plugins/meson-templates/resources/src/window-gtk4.vala
+++ b/src/plugins/meson-templates/resources/src/window-gtk4.vala
@@ -1,13 +1,13 @@
 {{include "license.vala"}}
 
 namespace {{PreFix}} {
-	[GtkTemplate (ui = "{{appid_path}}/{{ui_file}}")]
-	public class Window : Gtk.ApplicationWindow {
-		[GtkChild]
-		unowned Gtk.Label label;
+    [GtkTemplate (ui = "{{appid_path}}/{{ui_file}}")]
+    public class Window : Gtk.ApplicationWindow {
+        [GtkChild]
+        private unowned Gtk.Label label;
 
-		public Window (Gtk.Application app) {
-			Object (application: app);
-		}
-	}
+        public Window (Gtk.Application app) {
+            Object (application: app);
+        }
+    }
 }