diff --git a/xwords4/android/XWords4/AndroidManifest.xml b/xwords4/android/XWords4/AndroidManifest.xml
index 24c504600..e1a19061a 100644
--- a/xwords4/android/XWords4/AndroidManifest.xml
+++ b/xwords4/android/XWords4/AndroidManifest.xml
@@ -80,7 +80,7 @@
       <intent-filter>
         <action android:name="android.nfc.action.NDEF_DISCOVERED" />
         <category android:name="android.intent.category.DEFAULT" />
-        <data android:mimeType="application/org.eehouse.android.xw4" />
+        <data android:mimeType="@string/xwords_nfc_mime" />
       </intent-filter>
 
     </activity>
diff --git a/xwords4/android/XWords4/res/values/common_rsrc.xml b/xwords4/android/XWords4/res/values/common_rsrc.xml
index 2f4f07742..69e7a3651 100644
--- a/xwords4/android/XWords4/res/values/common_rsrc.xml
+++ b/xwords4/android/XWords4/res/values/common_rsrc.xml
@@ -115,7 +115,7 @@
 
   <!-- other -->
   <string name="default_host">eehouse.org</string>
-
+  <string name="xwords_nfc_mime">application/org.eehouse.android.xw4</string>
   <string name="invite_host">eehouse.org</string>
   <string name="invite_prefix">/and/</string>
   <string name="invite_mime">application/x-xwordsinvite</string>
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/NFCUtils.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/NFCUtils.java
index e9316c9e8..c50290151 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/NFCUtils.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/NFCUtils.java
@@ -49,14 +49,14 @@ public class NFCUtils {
     public static void buildAndPush( Activity activity, String data )
     {
         NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter( activity );
+        String mimeType = activity.getString( R.string.xwords_nfc_mime );
         NdefMessage msg = new NdefMessage( new NdefRecord[] {
-                new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
-                               "application/org.eehouse.android.xw4"
+                new NdefRecord(NdefRecord.TNF_MIME_MEDIA, mimeType
                                .getBytes(Charset.forName("US-ASCII")),
                                new byte[0], 
                                data.getBytes(Charset.forName("US-ASCII")))
                 ,NdefRecord.
-                createApplicationRecord("org.eehouse.android.xw4")
+                createApplicationRecord( activity.getPackageName() )
             });
         nfcAdapter.setNdefPushMessage( msg, activity );
     }