diff --git a/src/crypto/algorithms/megolm.js b/src/crypto/algorithms/megolm.js
index d0600057f..372caaf17 100644
--- a/src/crypto/algorithms/megolm.js
+++ b/src/crypto/algorithms/megolm.js
@@ -542,7 +542,7 @@ MegolmEncryption.prototype._getDevicesInRoom = function(room) {
     });
 
     // The global value is treated as a default for when rooms don't specify a value.
-    let isBlacklisting = this._crypto.getBlacklistUnverifiedDevices();
+    let isBlacklisting = this._crypto.getGlobalBlacklistUnverifiedDevices();
     if (room.getBlacklistUnverifiedDevices() !== null) {
         isBlacklisting = room.getBlacklistUnverifiedDevices();
     }