diff --git a/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon%/70-max31785-hwmon.rules b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon%/70-max31785-hwmon.rules
new file mode 100755
index 0000000..e1c3172
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon%/70-max31785-hwmon.rules
@@ -0,0 +1 @@
+SUBSYSTEM=="hwmon", ACTION=="add", ENV{OF_NAME}=="max31785", RUN="/bin/systemctl start max31785-hwmon-helper@%E{OF_FULLNAME}.service"