diff --git a/tsg_util/updateTsgStruct.m b/tsg_util/updateTsgStruct.m
index b60c05dbffafed36068e5af6e0d91f0471fdaac1..77fa1b3a00cffe4ac9a11e62276778d164191c67 100644
--- a/tsg_util/updateTsgStruct.m
+++ b/tsg_util/updateTsgStruct.m
@@ -72,6 +72,15 @@ if isempty( tsg.SSTP_ADJUSTED ) && ~isempty( tsg.SSTP )
   tsg.SSTP_ADJUSTED_ERROR = NaN * ones( size( tsg.SSTP ));
 end
   
+% Initialise  'variables_LINCOEF'
+% -------------------------------
+tsg.SSJT_LINCOEF(1) = 1;
+tsg.SSJT_LINCOEF(2) = 0;
+tsg.CNDC_LINCOEF(1) = 1;
+tsg.CNDC_LINCOEF(2) = 0;
+tsg.SSTP_LINCOEF(1) = 1;
+tsg.SSTP_LINCOEF(2) = 0;
+  
 % Save tsg structure 
 % ------------------
 setappdata( hTsgGUI, 'tsg_data', tsg);