diff --git a/matlab/TCV/gdat_tcv.m b/matlab/TCV/gdat_tcv.m
index 5da9427ca7ab12ecb2ffaeb5a3e9714497066ef9..d5151ab4088961d10dbab6b01bd8b3f78315c4f9 100644
--- a/matlab/TCV/gdat_tcv.m
+++ b/matlab/TCV/gdat_tcv.m
@@ -2476,7 +2476,7 @@ elseif strcmp(mapping_for_tcv.method,'switchcase')
         gdat_data.nbi.t=gdat_data.nbi.dim{1};
         gdat_data.nbi.x=[];
         gdat_data.nbi.data_fullpath=[nodenameeff];
-        gdat_data.nbi.label='P_{nbi}';
+        gdat_data.nbi.label='P_{nbi1}';
         gdat_data.nbi.help = nbh_data_tdi.help;
         nodenameeff2 = '\results::nbh:energy';
         gdat_data.nbi.data_fullpath=[nodenameeff ' *1e6 for W; and ' nodenameeff2 ' *1e3 for eV'];