diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index 29c653f..a45f502 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -66,7 +66,7 @@
 #include "utils/assembler.h"
 #include "verifier/verifier_compiler_binding.h"
 
-namespace art HIDDEN {
+namespace art {
 
 static constexpr size_t kArenaAllocatorMemoryReportThreshold = 8 * MB;