diff --git a/examples/date-diff.py b/examples/date-diff.py
index 662ef42..fae5e3d 100644
--- a/examples/date-diff.py
+++ b/examples/date-diff.py
@@ -63,7 +63,7 @@ def init_monitor():
     
     # Drawing on the Horizontal image
     logging.info("1.Drawing on the Horizontal image...") 
-    drawblack.text((4, 0), 'Noch: ' + duration + 'bis', font = font16, fill = 0)
+    drawblack.text((4, 0), 'Noch: ' + str(duration) + 'bis', font = font16, fill = 0)
     drawblack.text((4, 16), 'Hausverbrauch', font = font16, fill = 0)
     drawblack.text((4, 32), 'Strom Import', font = font16, fill = 0)
     drawblack.text((4, 48), 'Batterie', font = font16, fill = 0)