diff --git a/harness/testIntl.js b/harness/testIntl.js
index 1d43a2527c..286ccd129e 100644
--- a/harness/testIntl.js
+++ b/harness/testIntl.js
@@ -2321,6 +2321,7 @@ function allSimpleSanctionedUnits() {
     "megabit",
     "megabyte",
     "meter",
+    "microsecond",
     "mile",
     "mile-scandinavian",
     "milliliter",
@@ -2328,6 +2329,7 @@ function allSimpleSanctionedUnits() {
     "millisecond",
     "minute",
     "month",
+    "nanosecond",
     "ounce",
     "percent",
     "petabyte",
diff --git a/test/intl402/NumberFormat/prototype/format/units-invalid.js b/test/intl402/NumberFormat/prototype/format/units-invalid.js
index 0dd8261bfb..be2a0b7120 100644
--- a/test/intl402/NumberFormat/prototype/format/units-invalid.js
+++ b/test/intl402/NumberFormat/prototype/format/units-invalid.js
@@ -61,7 +61,6 @@ const units = [
   "metric-ton",
   "microgram",
   "micrometer",
-  "microsecond",
   "milliampere",
   "millibar",
   "milligram",
@@ -69,7 +68,6 @@ const units = [
   "milliwatt",
   "month-person",
   "nanometer",
-  "nanosecond",
   "nautical-mile",
   "ohm",
   "ounce-troy",