diff --git a/icu4c/source/test/intltest/uobjtest.cpp b/icu4c/source/test/intltest/uobjtest.cpp
index 8f8322297a6..b11e5236261 100644
--- a/icu4c/source/test/intltest/uobjtest.cpp
+++ b/icu4c/source/test/intltest/uobjtest.cpp
@@ -280,6 +280,7 @@ void UObjectTest::testIDs()
     TESTCLASSID_TRANSLIT(UnicodeNameTransliterator, "Any-Name");
     TESTCLASSID_TRANSLIT(UppercaseTransliterator, "Upper");
     TESTCLASSID_CTOR(CaseMapTransliterator, (UnicodeString(), NULL));
+    TESTCLASSID_CTOR(Quantifier, (NULL, 0, 0));
 #if UOBJTEST_TEST_INTERNALS
     TESTCLASSID_CTOR(FunctionReplacer, (NULL,NULL) ); /* don't care */
 #endif