diff --git a/PythonServer/screens/ts2_helevpres.py b/PythonServer/screens/ts2_helevpres.py
index 6f7383d1c81768cf95e9ee8024980030d28a3a51..c00dcc4167dedc3f4af3ff7e4656456d3a4cb8f6 100755
--- a/PythonServer/screens/ts2_helevpres.py
+++ b/PythonServer/screens/ts2_helevpres.py
@@ -17,7 +17,7 @@ def p2t(p):
         return "N/A"
     if p > 1960.1653287485129335:  # 'This formula is valid only for Temperature < 5 K'
         return "N/A"
-    if p <= 55.63416781077776:
+    if p <= 50.4181515759834:
         P = p * 100  # From mbar to Pascal
         A = [
             1.392408,