diff --git a/src/cpu/base.cc b/src/cpu/base.cc
index 548f012dfc..ce440aeffc 100644
--- a/src/cpu/base.cc
+++ b/src/cpu/base.cc
@@ -59,7 +59,7 @@ int maxThreadsPerCPU = 1;
 
 #if FULL_SYSTEM
 BaseCPU::BaseCPU(Params *p)
-    : SimObject(p->name), clock(p->clock), checkInterrupts(true),
+    : MemObject(p->name), clock(p->clock), checkInterrupts(true),
       params(p), number_of_threads(p->numberOfThreads), system(p->system)
 #else
 BaseCPU::BaseCPU(Params *p)