diff --git a/lib/xmet/sounding.py b/lib/xmet/sounding.py
index bebf33a..4041b60 100644
--- a/lib/xmet/sounding.py
+++ b/lib/xmet/sounding.py
@@ -246,14 +246,10 @@ class SoundingParams():
     def load_sounding(self, sounding: Sounding):
         surface = sounding.samples[0]
 
-        tv = virtual_temp(surface.temp,
-                          surface.dewpoint,
-                          surface.pressure)
-
         temp_line         = sounding.follow_temp()
         virtual_temp_line = sounding.follow_virtual_temp()
 
-        dry_adiabat = follow_dry_adiabat(tv, surface.pressure)
+        dry_adiabat = follow_dry_adiabat(surface.temp, surface.pressure)
 
         mixing_ratio_line = follow_saturated_mixing_ratio(surface.dewpoint,
                                                           surface.pressure)