1 files changed, 1 insertions, 1 deletions

diff --git a/checks/nut b/checks/nut
index df6c156..8219895 100644
--- a/checks/nut
+++ b/checks/nut
@@ -51,7 +51,7 @@ nut_battery_runtime_default_levels = (900, 600)
 
 nut_input_voltage_fault_default_levels = (155,  160)
 nut_input_default_levels = (245, 250)
-nut_input_freq_default_levels = (51, 55)
+nut_input_freq_default_levels = (52, 55)
 
 # the inventory function (dummy)
 def inventory_nut(check_type, info):