diff --git a/examples/solar-monitoring.py b/examples/solar-monitoring.py
index 4141ce2..7bfaeb8 100644
--- a/examples/solar-monitoring.py
+++ b/examples/solar-monitoring.py
@@ -127,7 +127,7 @@ def monitor(topics):
             print(key + ':', topic_info[key])
             print(topic_info["line"])
             print(topic_info["value"])
-            drawblack.text((160, int("0")), topic_info["value"], font = font16, fill = 0)
+            drawblack.text((160, int("0")), str(topic_info["value"]), font = font16, fill = 0)
 
     #drawblack.text((160, 16), str(house_power), font = font16, fill = 0)
     #drawblack.text((160, 32), str(power_import_export), font = font16, fill = 0)