diff --git a/mission/devices/devicedefinitions/payloadPcduDefinitions.h b/mission/devices/devicedefinitions/payloadPcduDefinitions.h
index 3af0bd46..f97c31b5 100644
--- a/mission/devices/devicedefinitions/payloadPcduDefinitions.h
+++ b/mission/devices/devicedefinitions/payloadPcduDefinitions.h
@@ -102,7 +102,7 @@ static constexpr double MPA_U_LOWER_BOUND = 2.6;
 static constexpr double MPA_U_UPPER_BOUND = 4.0;
 static constexpr double MPA_I_UPPER_BOUND = 650.0;
 
-static constexpr double HPA_U_LOWER_BOUND = 9.6;
+static constexpr double HPA_U_LOWER_BOUND = 9.4;
 static constexpr double HPA_U_UPPER_BOUND = 11.0;
 static constexpr double HPA_I_UPPER_BOUND = 3000.0;