diff --git a/compiler/utils/assembler_test.h b/compiler/utils/assembler_test.h
index 11a9b91..ae7636b 100644
--- a/compiler/utils/assembler_test.h
+++ b/compiler/utils/assembler_test.h
@@ -719,8 +719,8 @@
   explicit AssemblerTest() {}
 
   void SetUp() OVERRIDE {
-    arena_.reset(new ArenaAllocator(&pool_));
-    assembler_.reset(CreateAssembler(arena_.get()));
+    allocator_.reset(new ArenaAllocator(&pool_));
+    assembler_.reset(CreateAssembler(allocator_.get()));
     test_helper_.reset(
         new AssemblerTestInfrastructure(GetArchitectureString(),
                                         GetAssemblerCmdName(),
@@ -737,7 +737,7 @@
   void TearDown() OVERRIDE {
     test_helper_.reset();  // Clean up the helper.
     assembler_.reset();
-    arena_.reset();
+    allocator_.reset();
   }
 
   // Override this to set up any architecture-specific things, e.g., CPU revision.
@@ -1589,7 +1589,7 @@
   static constexpr size_t kWarnManyCombinationsThreshold = 500;
 
   ArenaPool pool_;
-  std::unique_ptr<ArenaAllocator> arena_;
+  std::unique_ptr<ArenaAllocator> allocator_;
   std::unique_ptr<Ass> assembler_;
   std::unique_ptr<AssemblerTestInfrastructure> test_helper_;