diff --git a/icu4c/source/i18n/locdspnm.cpp b/icu4c/source/i18n/locdspnm.cpp
index 8d83d37a66..7af4d29b15 100644
--- a/icu4c/source/i18n/locdspnm.cpp
+++ b/icu4c/source/i18n/locdspnm.cpp
@@ -343,6 +343,7 @@ LocaleDisplayNamesImpl::LocaleDisplayNamesImpl(const Locale& locale,
 
 LocaleDisplayNamesImpl::~LocaleDisplayNamesImpl() {
   delete format;
+  delete keyTypeFormat;
 }
 
 const Locale&