--- a/widgets/matrixeditor.h	Wed Jun 22 20:27:53 2022 +0300
+++ b/widgets/matrixeditor.h	Wed Jun 22 21:42:10 2022 +0300
@@ -2,10 +2,6 @@
 #include <QWidget>
 #include <glm/glm.hpp>
 
-namespace Ui {
-class MatrixEditor;
-}
-
 class MatrixEditor : public QWidget
 {
 	Q_OBJECT
@@ -21,7 +17,7 @@
 	constexpr int matrixSize() const;
 	Q_SLOT void multiplyButtonPressed();
 	class QDoubleSpinBox* spinboxes[4][3];
-	Ui::MatrixEditor *ui;
+	class Ui_MatrixEditor *ui;
 };
 
 constexpr int MatrixEditor::matrixSize() const