diff --git a/inputs/precipitator_mhd_lowres.in b/inputs/precipitator_mhd_lowres.in
index a9bb1b5d..1fd45a11 100644
--- a/inputs/precipitator_mhd_lowres.in
+++ b/inputs/precipitator_mhd_lowres.in
@@ -66,8 +66,8 @@ use_scratch = false
 scratch_level = 0 # 0 is actual scratch (tiny); 1 is HBM
 
 He_mass_fraction = 0.25
-dfloor = 0.     # Msun kpc^(-3)
-Tfloor = 1.5e6  # K
+dfloor = 1454.4065594167007     # Msun kpc^(-3) == 1e-4 cm^{-3}
+Tfloor = 1.5e6                  # K
 
 <units>
 code_length_cgs = 3.086e21      # kpc