diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BTInviteDelegate.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BTInviteDelegate.java
index 547112bb5..57622e655 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BTInviteDelegate.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BTInviteDelegate.java
@@ -203,8 +203,10 @@ public class BTInviteDelegate extends InviteDelegate {
 
         String msg = null;
         if ( mPersisted.stamps.containsKey( devName ) ) {
-            long lastSeenMS = mPersisted.stamps.get( devName );
-            CharSequence elapsed = DateUtils.getRelativeTimeSpanString( lastSeenMS );
+            CharSequence elapsed = DateUtils
+                .getRelativeTimeSpanString( mPersisted.stamps.get( devName ),
+                                            System.currentTimeMillis(),
+                                            DateUtils.SECOND_IN_MILLIS );
             msg = getString( R.string.bt_scan_age_fmt, elapsed );
         }