diff --git a/matlab/TCV/gdat_tcv.m b/matlab/TCV/gdat_tcv.m
index 80f4889b5db94a96bc21a83a98c99d026ed08438..43a7b34b78067a271255050f71e197dc3ec2a5fa 100644
--- a/matlab/TCV/gdat_tcv.m
+++ b/matlab/TCV/gdat_tcv.m
@@ -1384,6 +1384,10 @@ elseif strcmp(mapping_for_tcv.method,'switchcase')
            end
            gdat_data.data = gdat_data_data;
            gdat_data.data_refs = gdat_data_data_refs;
+         else
+           if (gdat_params.nverbose>=1)
+             disp('available only for shot > 82186, but can try gdat(shot,''\atlas::top.system.gas.valve_001:flow'',1)')
+           end
          end
        catch
        end