diff --git a/icu4c/source/common/unifiedcache.h b/icu4c/source/common/unifiedcache.h
index 61609cf125f..e01d1e6232f 100644
--- a/icu4c/source/common/unifiedcache.h
+++ b/icu4c/source/common/unifiedcache.h
@@ -38,7 +38,7 @@ class U_COMMON_API CacheKeyBase : public UObject {
     * Copy constructor. Needed to support cloning.
     */
    CacheKeyBase(const CacheKeyBase &other) 
-           : creationStatus(other.creationStatus) { }
+           : UObject(other), creationStatus(other.creationStatus) { }
    virtual ~CacheKeyBase();
 
    /**
@@ -135,6 +135,8 @@ class LocaleCacheKey : public CacheKey<T> {
    Locale   fLoc;
  public:
    LocaleCacheKey(const Locale &loc) : fLoc(loc) {};
+   LocaleCacheKey(const LocaleCacheKey &other)
+           : CacheKey<T>(other), fLoc(other.fLoc) { }
    virtual ~LocaleCacheKey() { }
    virtual int32_t hashCode() const {
        return 37 *CacheKey<T>::hashCode() + fLoc.hashCode();
diff --git a/icu4c/source/test/intltest/tsmthred.cpp b/icu4c/source/test/intltest/tsmthred.cpp
index 0e687cf6a62..56adf201605 100644
--- a/icu4c/source/test/intltest/tsmthred.cpp
+++ b/icu4c/source/test/intltest/tsmthred.cpp
@@ -1716,6 +1716,8 @@ class UCTMultiThreadItem : public SharedObject {
     }
 };
 
+U_NAMESPACE_BEGIN
+
 template<> U_EXPORT
 const UCTMultiThreadItem *LocaleCacheKey<UCTMultiThreadItem>::createObject(
         const void * /*unused*/, UErrorCode & /* status */) const {
@@ -1739,6 +1741,8 @@ const UCTMultiThreadItem *LocaleCacheKey<UCTMultiThreadItem>::createObject(
     return result;
 }
 
+U_NAMESPACE_END
+
 class UnifiedCacheThread: public SimpleThread {
   public:
     UnifiedCacheThread(const char *loc) : fLoc(loc) {};
diff --git a/icu4c/source/test/intltest/unifiedcachetest.cpp b/icu4c/source/test/intltest/unifiedcachetest.cpp
index 004d728cbc3..042f1a09ffc 100644
--- a/icu4c/source/test/intltest/unifiedcachetest.cpp
+++ b/icu4c/source/test/intltest/unifiedcachetest.cpp
@@ -26,6 +26,8 @@ class UCTItem : public SharedObject {
 class UCTItem2 : public SharedObject {
 };
 
+U_NAMESPACE_BEGIN
+
 template<> U_EXPORT
 const UCTItem *LocaleCacheKey<UCTItem>::createObject(
         const void * /*unused*/, UErrorCode &status) const {
@@ -52,6 +54,9 @@ const UCTItem2 *LocaleCacheKey<UCTItem2>::createObject(
     return NULL;
 }
 
+U_NAMESPACE_END
+
+
 class UnifiedCacheTest : public IntlTest {
 public:
     UnifiedCacheTest() {