diff --git a/launcher-gtk/src/main/kotlin/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.kt b/launcher-gtk/src/main/kotlin/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.kt
index b9a5cc3..bc11618 100644
--- a/launcher-gtk/src/main/kotlin/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.kt
+++ b/launcher-gtk/src/main/kotlin/io/gitlab/jfronny/inceptum/gtk/GtkEnvBackend.kt
@@ -78,30 +78,25 @@ object GtkEnvBackend : EnvBackend {
             .message(title)
             .detail(markup)
             .modal(true)
-            .build()
         when {
-            cancel == null -> {
-                dialog.setButtons(arrayOf(I18n["ok"]))
-                dialog.defaultButton = 0
-                dialog.cancelButton = -1
-            }
-            ok == null -> {
-                dialog.setButtons(arrayOf("Cancel"))
-                dialog.defaultButton = -1
-                dialog.cancelButton = 0
-            }
-            else -> {
-                dialog.setButtons(arrayOf("OK", "Cancel"))
-                dialog.defaultButton = 0
-                dialog.cancelButton = 1
-            }
+            cancel == null -> dialog.buttons(arrayOf(I18n["ok"]))
+                .defaultButton(0)
+                .cancelButton(-1)
+            ok == null -> dialog.buttons(arrayOf("Cancel"))
+                .defaultButton(-1)
+                .cancelButton(0)
+            else -> dialog.buttons(arrayOf("OK", "Cancel"))
+                .defaultButton(0)
+                .cancelButton(1)
         }
-        dialog.choose(parent, Cancellable()) { _, res, _ ->
-            val result = dialog.chooseFinish(res)
-            val cancelIdx = dialog.cancelButton
-            val defaultIdx = dialog.defaultButton
-            if (result == cancelIdx) cancel?.run()
-            if (result == defaultIdx) ok?.run()
+        dialog.build().apply {
+            choose(parent, Cancellable()) { _, res, _ ->
+                val result = chooseFinish(res)
+                val cancelIdx = cancelButton
+                val defaultIdx = defaultButton
+                if (result == cancelIdx) cancel?.run()
+                if (result == defaultIdx) ok?.run()
+            }
         }
     }