diff --git a/src/@dseries/lastobservedperiods.m b/src/@dseries/lastobservedperiods.m
index aa2a7d590294bb87db5ed6ae500b6fe29128bc22..699688f4b9b92e63992a946561a82400a4400277 100644
--- a/src/@dseries/lastobservedperiods.m
+++ b/src/@dseries/lastobservedperiods.m
@@ -84,7 +84,7 @@ end
 
 if t(1)
     for i=1:length(d)
-        t(i+1) = isequal(tmp{i}.name,{sprintf('A%u', i); sprintf('B%u', i)})
+        t(i+1) = isequal(tmp{i}.name,{sprintf('A%u', i); sprintf('B%u', i)});
     end
 end