diff --git a/matlab/gsa/skewness.m b/matlab/gsa/gsa_skewness.m
similarity index 79%
rename from matlab/gsa/skewness.m
rename to matlab/gsa/gsa_skewness.m
index 5188a4892..6b798f449 100644
--- a/matlab/gsa/skewness.m
+++ b/matlab/gsa/gsa_skewness.m
@@ -1,4 +1,4 @@
-function s=skewness(y),
+function s=gsa_skewness(y),
 
 % y=stand_(y);
 % s=mean(y.^3);
diff --git a/matlab/gsa/speed.m b/matlab/gsa/gsa_speed.m
similarity index 94%
rename from matlab/gsa/speed.m
rename to matlab/gsa/gsa_speed.m
index 791d05220..7df967b3e 100644
--- a/matlab/gsa/speed.m
+++ b/matlab/gsa/gsa_speed.m
@@ -1,5 +1,5 @@
-function [tadj, iff] = speed(A,B,mf,p),
-% [tadj, iff] = speed(A,B,mf,p),
+function [tadj, iff] = gsa_speed(A,B,mf,p),
+% [tadj, iff] = gsa_speed(A,B,mf,p),
 %
 % Part of the Sensitivity Analysis Toolbox for DYNARE
 %
diff --git a/matlab/gsa/log_trans_.m b/matlab/gsa/log_trans_.m
index 2aa16481f..49c4b1139 100644
--- a/matlab/gsa/log_trans_.m
+++ b/matlab/gsa/log_trans_.m
@@ -3,10 +3,10 @@ function [yy, xdir, isig, lam]=log_trans_(y0,xdir0)
 if nargin==1,
   xdir0='';
 end
-f=inline('skewness(log(y+lam))','lam','y');
+f=inline('gsa_skewness(log(y+lam))','lam','y');
 isig=1;
 if ~(max(y0)<0 | min(y0)>0)
-  if skewness(y0)<0,
+  if gsa_skewness(y0)<0,
     isig=-1;
     y0=-y0;
   end
diff --git a/matlab/gsa/map_ident_.m b/matlab/gsa/map_ident_.m
index bfe125ab0..689486a20 100644
--- a/matlab/gsa/map_ident_.m
+++ b/matlab/gsa/map_ident_.m
@@ -127,7 +127,7 @@ if opt_gsa.load_ident_files==0,
   % ino=find(~ismember([1:nr],io));
   % T2=A(ino,1:nr,:);
   R=A(:,nr+1:nc,:);
-%   [tadj, iff] = speed(A(1:nr,1:nr,:),R,io,0.5);
+%   [tadj, iff] = gsa_speed(A(1:nr,1:nr,:),R,io,0.5);
 %   [tadj, j0, ir_tadj, ic_tadj] = teff(tadj,Nsam,istable);
 %   [iff, j0, ir_if, ic_if] = teff(iff,Nsam,istable);