diff --git a/matlab/TCV/gdat_tcv.m b/matlab/TCV/gdat_tcv.m
index b628185ac277d8e16c0d9a66cfb33aa19094c61b..2b1c0fbc567eef190c5ab3222c232efd55c13baf 100644
--- a/matlab/TCV/gdat_tcv.m
+++ b/matlab/TCV/gdat_tcv.m
@@ -3457,7 +3457,7 @@ elseif strcmp(mapping_for_tcv.method,'switchcase')
             gdat_data.t = time_interval;
           end
         else
-          gdat_data.t = linspace(sxr.time(1),sxr.time(end),round((sxr.time(end)-sxr.time(1))/1e-4));
+          gdat_data.t = linspace(sxr.time(1),sxr.time(end),round((sxr.time(end)-sxr.time(1))/0.25e-4));
         end
         for i=1:size(sxr.data,2)
           gdat_data.data(i,:) = interpos(sxr.time,sxr.data(:,i),gdat_data.t,gdat_data.gdat_params.fit_tension);