diff --git a/src/hirshman_sigmar.jl b/src/hirshman_sigmar.jl
index c903714..a52e65f 100644
--- a/src/hirshman_sigmar.jl
+++ b/src/hirshman_sigmar.jl
@@ -84,7 +84,6 @@ function get_ion_electron_parameters(dd::IMAS.dd)
     loglam = 24.0 .- log.(sqrt.(ne) ./ Te)
 
     n_norm = ne
-    m_norm = md
     t_norm = Te
     nu_norm = sqrt.(k .* Te ./ md) ./ a
 
@@ -99,7 +98,7 @@ function get_ion_electron_parameters(dd::IMAS.dd)
     for i in 1:num_ions
         T1 = cp1d.ion[i].temperature[Int(ceil(end / 2))]
         Z[i] = IMAS.avgZ(cp1d.ion[i].element[1].z_n, T1)
-        mass[i] = cp1d.ion[i].element[1].a * mp / m_norm
+        mass[i] = cp1d.ion[i].element[1].a * mp / md
 
         dens[:, i] = cp1d.ion[i].density ./ m³_to_cm³ ./ n_norm
         temp[:, i] = cp1d.ion[i].temperature ./ t_norm
@@ -110,7 +109,7 @@ function get_ion_electron_parameters(dd::IMAS.dd)
         dlnndr[:, i] = -IMAS.calc_z(rmin / a, cp1d.ion[i].density, :backward)
         dlntdr[:, i] = -IMAS.calc_z(rmin / a, cp1d.ion[i].temperature, :backward)
 
-        vth[:, i] = sqrt.((cp1d.ion[i].temperature ./ t_norm) ./ (cp1d.ion[i].element[1].a * mp / m_norm))
+        vth[:, i] = sqrt.((cp1d.ion[i].temperature ./ t_norm) ./ (cp1d.ion[i].element[1].a * mp / md))
     end
 
     # tacking on electron parameters at the end 
diff --git a/src/input_neo.jl b/src/input_neo.jl
index 5d6341e..1a106fe 100644
--- a/src/input_neo.jl
+++ b/src/input_neo.jl
@@ -257,9 +257,8 @@ function InputNEO(dd::IMAS.dd, gridpoint_cp)
     dlntedr = dlntedr[gridpoint_cp]
 
     n_norm = ne
-    m_norm = md
     t_norm = Te
-    v_norm = sqrt(k .* t_norm ./ m_norm)
+    v_norm = sqrt(k .* t_norm ./ md)
 
     input_neo.RMIN_OVER_A = rmin[gridpoint_cp] / a
 
@@ -322,7 +321,7 @@ function InputNEO(dd::IMAS.dd, gridpoint_cp)
     for iion in eachindex(ions)
         species = iion
         setfield!(input_neo, Symbol("ANISO_MODEL_$species"), 1)
-        setfield!(input_neo, Symbol("MASS_$species"), ions[iion].element[1].a .* mp / m_norm)
+        setfield!(input_neo, Symbol("MASS_$species"), ions[iion].element[1].a .* mp / md)
         setfield!(input_neo, Symbol("Z_$species"), Int(ions[iion].element[1].z_n / ions[1].element[1].z_n))
 
         Ti = ions[iion].temperature ./ t_norm
@@ -347,7 +346,7 @@ function InputNEO(dd::IMAS.dd, gridpoint_cp)
             setfield!(input_neo, Symbol("DENS_$i"), ne / n_norm)
             setfield!(input_neo, Symbol("TEMP_$i"), Te / t_norm)
             setfield!(input_neo, Symbol("ANISO_MODEL_$i"), 1)
-            setfield!(input_neo, Symbol("MASS_$i"), me / m_norm)
+            setfield!(input_neo, Symbol("MASS_$i"), me / md)
             setfield!(input_neo, Symbol("Z_$i"), -1)
             setfield!(input_neo, Symbol("DLNNDR_$i"), dlnnedr)
             setfield!(input_neo, Symbol("DLNTDR_$i"), dlntedr)