diff --git a/kcms/cursortheme/kcmcursortheme.h b/kcms/cursortheme/kcmcursortheme.h
--- a/kcms/cursortheme/kcmcursortheme.h
+++ b/kcms/cursortheme/kcmcursortheme.h
@@ -89,6 +89,7 @@
     void selectedSizeRowChanged();
     void downloadingFileChanged();
     void preferredSizeChanged();
+    void themeApplied();
 
     void showSuccessMessage(const QString &message);
     void showInfoMessage(const QString &message);
diff --git a/kcms/cursortheme/kcmcursortheme.cpp b/kcms/cursortheme/kcmcursortheme.cpp
--- a/kcms/cursortheme/kcmcursortheme.cpp
+++ b/kcms/cursortheme/kcmcursortheme.cpp
@@ -334,6 +334,7 @@
         XFixesChangeCursorByName(QX11Info::display(), theme->loadCursor(name, size), QFile::encodeName(name));
     }
     updateSizeComboBox();
+    emit themeApplied();
     return true;
 #else
     Q_UNUSED(theme)
diff --git a/kcms/cursortheme/package/contents/ui/Delegate.qml b/kcms/cursortheme/package/contents/ui/Delegate.qml
--- a/kcms/cursortheme/package/contents/ui/Delegate.qml
+++ b/kcms/cursortheme/package/contents/ui/Delegate.qml
@@ -51,6 +51,13 @@
         currentSize: kcm.cursorThemeSettings.cursorSize
     }
 
+    Connections {
+        target: kcm
+        onThemeApplied: {
+            previewWidget.refresh();
+        }
+    }
+
     actions: [
         Kirigami.Action {
             iconName: "edit-delete"
diff --git a/kcms/cursortheme/xcursor/previewwidget.h b/kcms/cursortheme/xcursor/previewwidget.h
--- a/kcms/cursortheme/xcursor/previewwidget.h
+++ b/kcms/cursortheme/xcursor/previewwidget.h
@@ -51,6 +51,8 @@
         void setCurrentSize(int size);
         int currentSize() const;
 
+        Q_INVOKABLE void refresh();
+
     Q_SIGNALS:
         void themeModelChanged();
         void currentIndexChanged();
diff --git a/kcms/cursortheme/xcursor/previewwidget.cpp b/kcms/cursortheme/xcursor/previewwidget.cpp
--- a/kcms/cursortheme/xcursor/previewwidget.cpp
+++ b/kcms/cursortheme/xcursor/previewwidget.cpp
@@ -197,6 +197,16 @@
     return m_currentSize;
 }
 
+void PreviewWidget::refresh()
+{
+    if (!m_themeModel) {
+        return;
+    }
+
+    const CursorTheme *theme = m_themeModel->theme(m_themeModel->index(m_currentIndex, 0));
+    setTheme(theme, m_currentSize);
+}
+
 void PreviewWidget::updateImplicitSize()
 {
     qreal totalWidth = 0;