diff --git a/src/utilities/convert/dseries2M.m b/src/utilities/convert/dseries2M.m
index 66fc91c92766129b4f213b23239fe1f4dd61ef67..19eaeb57e339b149b165423a9952efa232d706ce 100644
--- a/src/utilities/convert/dseries2M.m
+++ b/src/utilities/convert/dseries2M.m
@@ -62,7 +62,7 @@ switch method
         lastday = datevec(ds.dates.time(idm(end)));
         tdata(i,:) = ds.data(idm(end),:);
         if lastday(3)<expectedlastday(dM(i))
-            warning('The last available day is not the last observed day of %s.', date2string(dM(i)))
+            warning('The last available day is not the last day of %s.', date2string(dM(i)))
         end
     end
   otherwise
diff --git a/src/utilities/convert/dseries2Q.m b/src/utilities/convert/dseries2Q.m
index 879e1ebeebe7801fdb88658123cb24f5a42a09ca..a3e8a408a5667b5367005bc8b097d321ca2235b5 100644
--- a/src/utilities/convert/dseries2Q.m
+++ b/src/utilities/convert/dseries2Q.m
@@ -72,13 +72,13 @@ switch method
         if ds.dates.freq==365
             lastday = datevec(ds.dates.time(idq(end)));
             if lastday(3)<expectedlastday(dQ(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dQ(i)))
+                warning('The last available day is not the last day of %s.', date2string(dQ(i)))
             end
         end
         if ds.dates.freq==12
             lastmonth = subperiod(ds.dates(idq(end)));
             if lastmonth<expectedlastmonth(dQ(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dQ(i)))
+                warning('The last available month is not the last month of %s.', date2string(dQ(i)))
             end
         end
     end
diff --git a/src/utilities/convert/dseries2S.m b/src/utilities/convert/dseries2S.m
index bcd80b5ed229bd5b148ea0276f2497c98238afe1..6fdb269e4e0d3a69f6ac09073de461d1b6570cbd 100644
--- a/src/utilities/convert/dseries2S.m
+++ b/src/utilities/convert/dseries2S.m
@@ -81,19 +81,19 @@ switch method
         if ds.dates.freq==365
             lastday = datevec(ds.dates.time(idh(end)));
             if lastday(3)<expectedlastday(dH(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dH(i)))
+                warning('The last available day is not the last day of %s.', date2string(dH(i)))
             end
         end
         if ds.dates.freq==12
             lastmonth = subperiod(ds.dates(idh(end)));
             if lastmonth<expectedlastmonth(dH(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dH(i)))
+                warning('The last available month is not the last month of %s.', date2string(dH(i)))
             end
         end
         if ds.dates.freq==4
             lastquarter = subperiod(ds.dates(idh(end)));
             if lastquarter<expectedlastquarter(dH(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dH(i)))
+                warning('The last available quarter is not the last quarter of %s.', date2string(dH(i)))
             end
         end
     end
diff --git a/src/utilities/convert/dseries2Y.m b/src/utilities/convert/dseries2Y.m
index 7da46031d14dae8a71742fe692d3005dad912f22..dbe75a5d2c653c3b6ddf9162d32d7318304cc068 100644
--- a/src/utilities/convert/dseries2Y.m
+++ b/src/utilities/convert/dseries2Y.m
@@ -90,25 +90,25 @@ switch method
         if ds.dates.freq==365
             lastday = datevec(ds.dates.time(idy(end)));
             if lastday(3)<expectedlastday(dY(i))
-                warning('The last available day is not the last observed day of %s.', date2string(dY(i)))
+                warning('The last available day is not the last day of %s.', date2string(dY(i)))
             end
         end
         if ds.dates.freq==12
             lastmonth = subperiod(ds.dates(idy(end)));
             if lastmonth<12
-                warning('The last available day is not the last observed day of %s.', date2string(dY(i)))
+                warning('The last available month is not the last month of %s.', date2string(dY(i)))
             end
         end
         if ds.dates.freq==4
             lastquarter = subperiod(ds.dates(idy(end)));
             if lastquarter<4
-                warning('The last available day is not the last observed day of %s.', date2string(dY(i)))
+                warning('The last available quarter is not the last quarter of %s.', date2string(dY(i)))
             end
         end
         if ds.dates.freq==2
             lastsemester = subperiod(ds.dates(idy(end)));
             if lastsemester<2
-                warning('The last available day is not the last observed day of %s.', date2string(dY(i)))
+                warning('The last available semester is not the last semester of %s.', date2string(dY(i)))
             end
         end
     end