diff --git a/src/Gui/SpinBox.cpp b/src/Gui/SpinBox.cpp
index eebf84a245..207ec81335 100644
--- a/src/Gui/SpinBox.cpp
+++ b/src/Gui/SpinBox.cpp
@@ -68,7 +68,6 @@ ExpressionSpinBox::~ExpressionSpinBox() = default;
 
 int ExpressionSpinBox::getMargin()
 {
-    lineedit = spinbox->findChild<QLineEdit*>();
 #if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
     return lineedit->style()->pixelMetric(QStyle::PM_LineEditIconMargin, nullptr, lineedit) / 2;
 #else
@@ -179,12 +178,7 @@ void ExpressionSpinBox::onChange()
 
 void ExpressionSpinBox::resizeWidget()
 {
-#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
-    int margin = lineedit->style()->pixelMetric(QStyle::PM_LineEditIconMargin, nullptr, lineedit) / 2;
-#else
-    int margin = lineedit->style()->pixelMetric(QStyle::PM_FocusFrameHMargin, nullptr, lineedit);
-#endif
-    int iconWidth = iconLabel->width() + margin;
+    int iconWidth = iconLabel->width() + getMargin();
     iconLabel->move(lineedit->width() - iconWidth, (lineedit->height() - iconLabel->height()) / 2);
     updateExpression();
 }