diff --git a/matlab/@dates/subsref.m b/matlab/@dates/subsref.m
index 6ceaf8396..7b4c54d94 100644
--- a/matlab/@dates/subsref.m
+++ b/matlab/@dates/subsref.m
@@ -37,7 +37,7 @@ switch S(1).type
             error(['dates::subsref: ' S(1).subs ' is not a method but a member!'])
         end
         B = builtin('subsref', A, S(1));
-      case {'sort','unique','double'}% Public methods (without arguments)
+      case {'sort','unique','double','isempty'}% Public methods (without arguments)
         B = feval(S(1).subs,A);
         if length(S)>1 && isequal(S(2).type,'()') && isempty(S(2).subs)
            S = shiftS(S);