diff --git a/src/devices/solar.cpp b/src/devices/solar.cpp
index 8c6fe6a4f..cee2d1849 100644
--- a/src/devices/solar.cpp
+++ b/src/devices/solar.cpp
@@ -145,7 +145,7 @@ void Solar::publish_values() {
     }
 
     if (Helpers::hasValue(pumpWorkMin_)) {
-        doc["pumpWorkMin"] = (float)pumpWorkMin_;
+        doc["pumpWorkMin"] = pumpWorkMin_;
     }
 
     if (Helpers::hasValue(tankHeated_, EMS_VALUE_BOOL)) {