diff --git a/icu4c/source/test/hdrtst/cxxfiles.txt b/icu4c/source/test/hdrtst/cxxfiles.txt
index 81e99613db8..27773c04552 100644
--- a/icu4c/source/test/hdrtst/cxxfiles.txt
+++ b/icu4c/source/test/hdrtst/cxxfiles.txt
@@ -48,6 +48,8 @@ unirepl.h
 uniset.h
 unistr.h
 unitohex.h
+uobject.h
+usetiter.h
 #added
 loengine.h
 #the following are C++ also