diff --git a/src/private/multisplitter/Widget_qwidget.h b/src/private/multisplitter/Widget_qwidget.h
index 1c9f85a9..f7fcb1b4 100644
--- a/src/private/multisplitter/Widget_qwidget.h
+++ b/src/private/multisplitter/Widget_qwidget.h
@@ -64,10 +64,4 @@ private:
     Q_DISABLE_COPY(Widget_qwidget)
 };
 
-inline int widgetMinLength(const QWidget *w, Qt::Orientation o)
-{
-    const QSize sz = Widget_qwidget::widgetMinSize(w);
-    return o == Qt::Vertical ? sz.height() : sz.width();
-}
-
 }
diff --git a/tests/tst_docks.cpp b/tests/tst_docks.cpp
index e2881d51..88302e18 100644
--- a/tests/tst_docks.cpp
+++ b/tests/tst_docks.cpp
@@ -56,6 +56,12 @@ using namespace KDDockWidgets;
 using namespace KDDockWidgets::Tests;
 using namespace Layouting;
 
+inline int widgetMinLength(const QWidget *w, Qt::Orientation o)
+{
+    const QSize sz = Widget_qwidget::widgetMinSize(w);
+    return o == Qt::Vertical ? sz.height() : sz.width();
+}
+
 struct SetExpectedWarning
 {
     explicit SetExpectedWarning(const QString &s)