diff --git a/lib/xmet/thermo.py b/lib/xmet/thermo.py
index e9c0846..94aaedd 100644
--- a/lib/xmet/thermo.py
+++ b/lib/xmet/thermo.py
@@ -83,11 +83,11 @@ def lapse(temp: float, delta: float, rate=LAPSE_RATE_DRY) -> float:
     return temp - (rate * delta)
 
 def moist_lapse_rate(temp: float, pressure: float) -> float:
-    g   = 9.8076
+    g   =       9.8076
     Hv  = 2501000
-    Rsd = 287
-    Rsw = 461.5
-    Cpd = 1003.5
+    Rsd =     287.0
+    Rsw =     461.5
+    Cpd =    1003.5
     r   = saturated_mixing_ratio(temp, pressure)
     T   = kelvin(temp)