diff --git a/cpu/base_cpu.cc b/cpu/base_cpu.cc
index 181b484e73..74e57baa66 100644
--- a/cpu/base_cpu.cc
+++ b/cpu/base_cpu.cc
@@ -197,8 +197,7 @@ BaseCPU::registerExecContexts()
 void
 BaseCPU::switchOut(SamplingCPU *sampler)
 {
-    // default: do nothing, signal done
-    sampler->signalSwitched();
+    panic("This CPU doesn't support sampling!");
 }
 
 void