diff --git a/src/arch/arm/fastmodel/iris/thread_context.hh b/src/arch/arm/fastmodel/iris/thread_context.hh
index 7db253c8d0..0b55415325 100644
--- a/src/arch/arm/fastmodel/iris/thread_context.hh
+++ b/src/arch/arm/fastmodel/iris/thread_context.hh
@@ -195,11 +195,7 @@ class ThreadContext : public ::ThreadContext
     {
         return _dtb;
     }
-    CheckerCPU *
-    getCheckerCpuPtr() override
-    {
-        panic("%s not implemented.", __FUNCTION__);
-    }
+    CheckerCPU *getCheckerCpuPtr() override { return nullptr; }
     ArmISA::Decoder *
     getDecoderPtr() override
     {