diff --git a/examples/solar-monitoring.py b/examples/solar-monitoring.py
index 9e27225..de5b60a 100644
--- a/examples/solar-monitoring.py
+++ b/examples/solar-monitoring.py
@@ -125,7 +125,7 @@ def monitor(topics):
     
         for key in topic_info:
             print(key + ':', topic_info[key])
-            drawblack.text((160, topic_info["line"]), topic_info["value"], font = font16, fill = 0)
+            drawblack.text((160, int(topic_info["line"])), topic_info["value"], font = font16, fill = 0)
             topic_info["value"] = subscribe(client, topic_info["topic"])
 
     #drawblack.text((160, 16), str(house_power), font = font16, fill = 0)