diff --git a/compiler/optimizing/optimizing_compiler.h b/compiler/optimizing/optimizing_compiler.h
index a415eca..d076fb5 100644
--- a/compiler/optimizing/optimizing_compiler.h
+++ b/compiler/optimizing/optimizing_compiler.h
@@ -24,6 +24,6 @@
 
 Compiler* CreateOptimizingCompiler(CompilerDriver* driver);
 
-}
+}  // namespace art
 
 #endif  // ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_H_