diff --git a/SConscript b/SConscript
index e66763ca1..4d034927a 100644
--- a/SConscript
+++ b/SConscript
@@ -122,6 +122,8 @@ base_sources = Split('''
         cpu/trace/reader/ibm_reader.cc
         cpu/trace/reader/itx_reader.cc
         cpu/trace/reader/m5_reader.cc
+        cpu/trace/opt_cpu.cc
+        cpu/trace/trace_cpu.cc
 
 	encumbered/cpu/full/bpred.cc
 	encumbered/cpu/full/commit.cc