diff --git a/cpu/trace/opt_cpu.cc b/cpu/trace/opt_cpu.cc
index df4197e26..77211e382 100644
--- a/cpu/trace/opt_cpu.cc
+++ b/cpu/trace/opt_cpu.cc
@@ -48,7 +48,7 @@ OptCPU::OptCPU(const string &name,
                int block_size,
                int cache_size,
                int _assoc)
-    : BaseCPU(name,1), tickEvent(this), trace(_trace),
+    : BaseCPU(name, 1, true), tickEvent(this), trace(_trace),
       numBlks(cache_size/block_size), assoc(_assoc), numSets(numBlks/assoc),
       setMask(numSets - 1)
 {
diff --git a/cpu/trace/trace_cpu.cc b/cpu/trace/trace_cpu.cc
index b69793a4b..f1160337a 100644
--- a/cpu/trace/trace_cpu.cc
+++ b/cpu/trace/trace_cpu.cc
@@ -47,7 +47,7 @@ TraceCPU::TraceCPU(const string &name,
                    MemInterface *icache_interface,
                    MemInterface *dcache_interface,
                    MemTraceReader *data_trace)
-    : BaseCPU(name, 4), icacheInterface(icache_interface),
+    : BaseCPU(name, 4, true), icacheInterface(icache_interface),
       dcacheInterface(dcache_interface),
       dataTrace(data_trace), outstandingRequests(0), tickEvent(this)
 {