diff --git a/homeassistant/components/modbus/base_platform.py b/homeassistant/components/modbus/base_platform.py
index cdc1e7a6986..ac11bab303d 100644
--- a/homeassistant/components/modbus/base_platform.py
+++ b/homeassistant/components/modbus/base_platform.py
@@ -199,6 +199,8 @@ class BaseStructPlatform(BasePlatform, RestoreEntity):
             self._precision = config.get(CONF_PRECISION, 2)
         else:
             self._precision = config.get(CONF_PRECISION, 0)
+            if self._precision > 0 or self._scale != int(self._scale):
+                self._value_is_int = False
 
     def _swap_registers(self, registers: list[int], slave_count: int) -> list[int]:
         """Do swap as needed."""