diff --git a/toolbox/multivariate/mcd.m b/toolbox/multivariate/mcd.m
index 1b0ae6d11..91cdc4fde 100644
--- a/toolbox/multivariate/mcd.m
+++ b/toolbox/multivariate/mcd.m
@@ -1410,7 +1410,7 @@
         % Fraction of observations whose covariance determinant will be
         % minimized. If a percentage alpha=1-h/n of units are trimmed by 
         % the mcd, it is 1-alpha. 
-        alphacompto1 = h/n;
+        alphacompto1 = round(h/n,2);
 
         if nargin<4 || isempty(nu) || nu == 0
             % This is the standard case, applied when uncontaminated data
diff --git a/toolbox/utilities_stat/msdcutoff.m b/toolbox/utilities_stat/msdcutoff.m
index 5352edce2..fdbe4f863 100644
--- a/toolbox/utilities_stat/msdcutoff.m
+++ b/toolbox/utilities_stat/msdcutoff.m
@@ -140,7 +140,7 @@
 
 %% Beginning of code
 
-if nargin < 3 || isempty(nu)
+if nargin < 3 || isempty(nu) || nu == 0
     cutoff=chi2inv(conflev,v);
 else
     cutoff = (1 - betainv(conflev,v/2,nu/2))^(-1);