diff --git a/pointer_input.cpp b/pointer_input.cpp
--- a/pointer_input.cpp
+++ b/pointer_input.cpp
@@ -908,6 +908,7 @@
         connect(m_cursorTheme, &WaylandCursorTheme::themeChanged, this,
             [this] {
                 m_cursors.clear();
+                m_cursorsByName.clear();
                 loadThemeCursor(Qt::ArrowCursor, &m_fallbackCursor);
                 updateDecorationCursor();
                 updateMoveResize();