diff --git a/src/phase_mechanical_plastic_dislotwin.f90 b/src/phase_mechanical_plastic_dislotwin.f90
index d886322ac..8660ee1ad 100644
--- a/src/phase_mechanical_plastic_dislotwin.f90
+++ b/src/phase_mechanical_plastic_dislotwin.f90
@@ -627,7 +627,7 @@ module subroutine dislotwin_dotState(Mp,T,ph,en)
   real(pReal), dimension(param(ph)%sum_N_tr) :: &
     dot_gamma_tr
   real(pReal), parameter :: &
-    gamma_char_tr = 1.0_pReal !!! TODO
+    gamma_char_tr = 1.0_pReal ! ToDo: get correct value
   real(pReal) :: &
     mu, &
     nu, &
@@ -941,7 +941,7 @@ pure subroutine kinetics_tw(Mp,T,dot_gamma_sl,ph,en,&
         dP_dTau = prm%r(i) * (tau_hat/tau)**prm%r(i)/tau * P
 
         s = prm%fcc_twinNucleationSlipPair(1:2,i)
-        dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tw
+        dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tw  ! ToDo: factor 3
 
         P_ncs = 1.0_pReal-exp(-prm%V_cs/(K_B*T)*(tau_r-tau))
         dP_ncs_dtau = prm%V_cs / (K_B * T) * (P_ncs - 1.0_pReal)
@@ -1022,7 +1022,7 @@ pure subroutine kinetics_tr(Mp,T,dot_gamma_sl,ph,en,&
         dP_dTau = prm%s(i) * (tau_hat/tau)**prm%s(i)/tau * P
 
         s = prm%fcc_twinNucleationSlipPair(1:2,i)
-        dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tr
+        dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tr  ! ToDo: factor 3
 
         P_ncs = 1.0_pReal-exp(-prm%V_cs/(K_B*T)*(tau_r-tau))
         dP_ncs_dtau = prm%V_cs / (K_B * T) * (P_ncs - 1.0_pReal)