diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
index 5f43758fd..e7fe0ae61 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
@@ -2349,10 +2349,10 @@ public class GamesListDelegate extends ListDelegateBase
             // creates
             for ( long rowid : rowids.keySet() ) {
                 if ( nli.forceChannel == rowids.get(rowid) ) {
-                    // May not want this at all if it's never a bad thing
                     makeOkOnlyBuilder( R.string.dropped_dupe )
-                        .setParams(rowid)
-                        .setTitle("add open game button")
+                        .setActionPair( Action.OPEN_GAME,
+                                        R.string.button_open_game )
+                        .setParams( rowid, null ) // null: GameSummary
                         .show();
                     handled = true;
                     break;
@@ -2760,7 +2760,8 @@ public class GamesListDelegate extends ListDelegateBase
         final long rowid = (Long)params[0];
         GameSummary summary = (GameSummary)params[1];
 
-        if ( summary.conTypes.contains( CommsConnType.COMMS_CONN_RELAY )
+        if ( null != summary
+             && summary.conTypes.contains( CommsConnType.COMMS_CONN_RELAY )
              && summary.roomName.length() == 0 ) {
             Assert.failDbg();
         } else {
diff --git a/xwords4/android/app/src/main/res/values/strings.xml b/xwords4/android/app/src/main/res/values/strings.xml
index 698ae558e..af526f2e2 100644
--- a/xwords4/android/app/src/main/res/values/strings.xml
+++ b/xwords4/android/app/src/main/res/values/strings.xml
@@ -2000,9 +2000,12 @@
     </plurals>
     <string name="summary_thumbsize">Thumbnail size</string>
     <string name="thumb_off">Disabled</string>
-    <!-- <string name="summary_thumb_enabled">Display snapshots of games</string> -->
-    <string name="dropped_dupe">Invitation received but ignored: it
-    has already been used to create a game.</string>
+    <!-- Text of alert shown when user accepts an invitation, e.g. in
+         email, for the second time. -->
+    <string name="dropped_dupe">This invitation has already been used
+    to create a game.</string>
+    <!-- Button in "Duplicate invitation ignored" alert -->
+    <string name="button_open_game">Open Game</string>
     <string name="cur_menu_marker_fmt">%1$s (in use)</string>
     <string name="board_menu_invite">Invite</string>
     <string name="enable_nfc">NFC is turned off on this device. You