diff --git a/tests/t9999-testsuite_example.sh b/tests/t9999-testsuite_example.sh
index 18b93da..7ca889e 100755
--- a/tests/t9999-testsuite_example.sh
+++ b/tests/t9999-testsuite_example.sh
@@ -92,7 +92,7 @@ TODO: Report file updated.
 >>> todo.sh report
 TODO: $HOME/todo.txt archived.
 TODO: Report file updated.
-2009-02-13-04:40:00 5 1
+2009-02-13T04:40:00 5 1
 
 >>> todo.sh append g a
 usage: todo.sh append ITEM# "TEXT TO APPEND"
@@ -171,12 +171,12 @@ TODO: 3 marked as done.
 x 2009-02-13 smell the coffee +wakeup
 TODO: $HOME/todo.txt archived.
 TODO: Report file updated.
-2009-02-13-04:40:00 5 2
+2009-02-13T04:40:00 5 2
 
 >>> todo.sh report
 TODO: $HOME/todo.txt archived.
 TODO: Report file updated.
-2009-02-13-04:40:00 5 2
+2009-02-13T04:40:00 5 2
 
 >>> todo.sh remdup
 Usage: todo.sh [-fhpantvV] [-d todo_config] action [task_number] [task_description]
diff --git a/todo.sh b/todo.sh
index 83f2502..a37be5c 100755
--- a/todo.sh
+++ b/todo.sh
@@ -1222,7 +1222,7 @@ note: PRIORITY must be anywhere from A to Z."
 
     TOTAL=$( sed -n '$ =' "$TODO_FILE" )
     TDONE=$( sed -n '$ =' "$DONE_FILE" )
-    echo "$(date +%Y-%m-%d-%T) ${TOTAL:-0} ${TDONE:-0}" >> "$REPORT_FILE"
+    echo "$(date +%Y-%m-%dT%T) ${TOTAL:-0} ${TDONE:-0}" >> "$REPORT_FILE"
     [ $TODOTXT_VERBOSE -gt 0 ] && echo "TODO: Report file updated."
     sed -ne '$p' "$REPORT_FILE"
     ;;