diff --git a/dlls/dpnet/address.c b/dlls/dpnet/address.c
index 7a33f8af141..d2a05f642d5 100644
--- a/dlls/dpnet/address.c
+++ b/dlls/dpnet/address.c
@@ -232,9 +232,30 @@ static HRESULT WINAPI IDirectPlay8AddressImpl_Duplicate(IDirectPlay8Address *ifa
         {
             struct component *entry = This->components[i];
 
-            hr = IDirectPlay8Address_AddComponent(dup, entry->name, &entry->data, entry->size, entry->type);
+            switch (entry->type)
+            {
+                case DPNA_DATATYPE_DWORD:
+                    hr = IDirectPlay8Address_AddComponent(dup, entry->name, &entry->data.value, entry->size, entry->type);
+                    break;
+                case DPNA_DATATYPE_GUID:
+                    hr = IDirectPlay8Address_AddComponent(dup, entry->name, &entry->data.guid, entry->size, entry->type);
+                    break;
+                case DPNA_DATATYPE_STRING:
+                    hr = IDirectPlay8Address_AddComponent(dup, entry->name, entry->data.string, entry->size, entry->type);
+                    break;
+                case DPNA_DATATYPE_STRING_ANSI:
+                    hr = IDirectPlay8Address_AddComponent(dup, entry->name, entry->data.ansi, entry->size, entry->type);
+                    break;
+                case DPNA_DATATYPE_BINARY:
+                    hr = IDirectPlay8Address_AddComponent(dup, entry->name, entry->data.binary, entry->size, entry->type);
+                    break;
+            }
+
             if(hr != S_OK)
+            {
                 ERR("Failed to copy component: %s - 0x%08x\n", debugstr_w(entry->name), hr);
+                break;
+            }
         }
 
         *ppdpaNewAddress = dup;
diff --git a/dlls/dpnet/tests/address.c b/dlls/dpnet/tests/address.c
index ee589f56a82..cb226f9e6c1 100644
--- a/dlls/dpnet/tests/address.c
+++ b/dlls/dpnet/tests/address.c
@@ -24,6 +24,7 @@
 
 /* {6733C6E8-A0D6-450E-8C18-CEACF331DC27} */
 static const GUID IID_Random = {0x6733c6e8, 0xa0d6, 0x450e, { 0x8c, 0x18, 0xce, 0xac, 0xf3, 0x31, 0xdc, 0x27 } };
+static const WCHAR localhost[] = {'l','o','c','a','l','h','o','s','t',0};
 
 static void create_directplay_address(void)
 {
@@ -70,7 +71,6 @@ static void create_directplay_address(void)
 static void address_addcomponents(void)
 {
     static const WCHAR UNKNOWN[] = { 'u','n','k','n','o','w','n',0 };
-    static const WCHAR localhost[] = {'l','o','c','a','l','h','o','s','t',0};
     static const char testing[] = "testing";
     HRESULT hr;
     IDirectPlay8Address *localaddr = NULL;
@@ -309,14 +309,20 @@ static void address_duplicate(void)
         hr = IDirectPlay8Address_SetSP(localaddr, &CLSID_DP8SP_TCPIP);
         ok(hr == S_OK, "got 0x%08x\n", hr);
 
+        hr = IDirectPlay8Address_AddComponent(localaddr, DPNA_KEY_HOSTNAME, &localhost, sizeof(localhost), DPNA_DATATYPE_STRING);
+        ok(hr == S_OK, "got 0x%08x\n", hr);
+
         hr = IDirectPlay8Address_GetNumComponents(localaddr, &components);
         ok(hr == S_OK, "got 0x%08x\n", hr);
-        ok(components == 1, "components=%d\n", components);
+        ok(components == 2, "components=%d\n", components);
 
         hr = IDirectPlay8Address_Duplicate(localaddr, &duplicate);
         ok(hr == S_OK, "got 0x%08x\n", hr);
         if(SUCCEEDED(hr))
         {
+            DWORD size, type;
+            WCHAR buffer[256];
+
             hr = IDirectPlay8Address_GetSP(duplicate, &guid);
             ok(hr == S_OK, "got 0x%08x\n", hr);
             ok(IsEqualGUID(&guid, &CLSID_DP8SP_TCPIP), "wrong guid\n");
@@ -325,6 +331,12 @@ static void address_duplicate(void)
             ok(hr == S_OK, "got 0x%08x\n", hr);
             ok(components == dupcomps, "expected %d got %d\n", components, dupcomps);
 
+            size = sizeof(buffer);
+            hr = IDirectPlay8Address_GetComponentByName(duplicate, DPNA_KEY_HOSTNAME, buffer, &size, &type);
+            ok(hr == S_OK, "got 0x%08x\n", hr);
+            ok(type == DPNA_DATATYPE_STRING, "incorrect type %d\n", type);
+            ok(!lstrcmpW(buffer, localhost), "Invalid string: %s\n", wine_dbgstr_w(buffer));
+
             IDirectPlay8Address_Release(duplicate);
         }