diff --git a/cpu/SConscript b/cpu/SConscript
index 888dbdc222..c34971acfc 100644
--- a/cpu/SConscript
+++ b/cpu/SConscript
@@ -146,6 +146,8 @@ if 'OzoneCPU' in env['CPU_MODELS']:
     sources += Split('''
         ozone/back_end.cc
         ozone/lsq_unit.cc
+        ozone/lw_back_end.cc
+        ozone/lw_lsq.cc
         ''')
 
 # FullCPU sources are included from m5/SConscript since they're not