diff --git a/src/app/server/CommissioningWindowManager.cpp b/src/app/server/CommissioningWindowManager.cpp
index e9f3ae6350d432..17503478b862bc 100644
--- a/src/app/server/CommissioningWindowManager.cpp
+++ b/src/app/server/CommissioningWindowManager.cpp
@@ -175,7 +175,7 @@ void CommissioningWindowManager::OnSessionEstablished(const SessionHandle & sess
     }
     else
     {
-        err = failSafeContext.ArmFailSafe(kUndefinedFabricId, System::Clock::Seconds16(60));
+        err = failSafeContext.ArmFailSafe(kUndefinedFabricIndex, System::Clock::Seconds16(60));
         if (err != CHIP_NO_ERROR)
         {
             ChipLogError(AppServer, "Error arming failsafe on PASE session establishment completion");