diff --git a/monitor/config_files/p10bmc/ibm,bonnell/config.json b/monitor/config_files/p10bmc/ibm,bonnell/config.json
index 2115cec..259cea0 100644
--- a/monitor/config_files/p10bmc/ibm,bonnell/config.json
+++ b/monitor/config_files/p10bmc/ibm,bonnell/config.json
@@ -5,6 +5,7 @@
             "method": "count",
             "count_interval": 1,
             "deviation": 18,
+            "upper_deviation": 40,
             "num_sensors_nonfunc_for_fan_nonfunc": 0,
             "monitor_start_delay": 30,
             "fan_missing_error_delay": 20,
@@ -30,6 +31,7 @@
             "method": "count",
             "count_interval": 1,
             "deviation": 18,
+            "upper_deviation": 40,
             "num_sensors_nonfunc_for_fan_nonfunc": 0,
             "monitor_start_delay": 30,
             "fan_missing_error_delay": 20,