diff --git a/configs/example/fs.py b/configs/example/fs.py
index 5edda6e5ff..6db26a02a4 100644
--- a/configs/example/fs.py
+++ b/configs/example/fs.py
@@ -77,6 +77,8 @@ else:
 
 cpu.clock = '2GHz'
 cpu2.clock = '2GHz'
+cpu.cpu_id = 0
+cpu2.cpu_id = 0
 
 if options.benchmark:
     if options.benchmark not in Benchmarks:
diff --git a/configs/example/se.py b/configs/example/se.py
index de8b6c890a..d1d19eebc5 100644
--- a/configs/example/se.py
+++ b/configs/example/se.py
@@ -91,6 +91,7 @@ else:
     cpu = AtomicSimpleCPU()
 
 cpu.workload = process
+cpu.cpu_id = 0
 
 system = System(cpu = cpu,
                 physmem = PhysicalMemory(),