diff --git a/NumberDisplay.cpp b/NumberDisplay.cpp
index 963cef7..fc56cfa 100644
--- a/NumberDisplay.cpp
+++ b/NumberDisplay.cpp
@@ -33,6 +33,10 @@ NumberDisplay::setPixmaps (Skin *skin)
 void
 NumberDisplay::setNumber (uint n1, uint n2)
 {
+	if (m_n1 == n1 && m_n2 == n2) {
+		/* Do nothing */
+		return;
+	}
 	MainWindow *mw = (MainWindow *)((SkinDisplay *)parent ())->getMW();
 
 	m_n1 = n1;