diff --git a/compiler/optimizing/code_generator.h b/compiler/optimizing/code_generator.h
index b58a3ff..5da0e59 100644
--- a/compiler/optimizing/code_generator.h
+++ b/compiler/optimizing/code_generator.h
@@ -425,9 +425,12 @@
         core_spill_mask_(0),
         fpu_spill_mask_(0),
         first_register_slot_in_slow_path_(0),
-        blocked_core_registers_(graph->GetArena()->AllocArray<bool>(number_of_core_registers)),
-        blocked_fpu_registers_(graph->GetArena()->AllocArray<bool>(number_of_fpu_registers)),
-        blocked_register_pairs_(graph->GetArena()->AllocArray<bool>(number_of_register_pairs)),
+        blocked_core_registers_(graph->GetArena()->AllocArray<bool>(number_of_core_registers,
+                                                                    kArenaAllocCodeGenerator)),
+        blocked_fpu_registers_(graph->GetArena()->AllocArray<bool>(number_of_fpu_registers,
+                                                                   kArenaAllocCodeGenerator)),
+        blocked_register_pairs_(graph->GetArena()->AllocArray<bool>(number_of_register_pairs,
+                                                                    kArenaAllocCodeGenerator)),
         number_of_core_registers_(number_of_core_registers),
         number_of_fpu_registers_(number_of_fpu_registers),
         number_of_register_pairs_(number_of_register_pairs),