Guard headers tool.
diff --git a/src/compiler/ruby_generator_map-inl.h b/src/compiler/ruby_generator_map-inl.h
index a86342e..f902b6d 100644
--- a/src/compiler/ruby_generator_map-inl.h
+++ b/src/compiler/ruby_generator_map-inl.h
@@ -31,8 +31,8 @@
*
*/
-#ifndef NET_GRPC_COMPILER_RUBY_GENERATOR_MAP_INL_H_
-#define NET_GRPC_COMPILER_RUBY_GENERATOR_MAP_INL_H_
+#ifndef GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_MAP_INL_H
+#define GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_MAP_INL_H
#include <iostream>
#include <initializer_list>
@@ -69,4 +69,4 @@
} // namespace grpc_ruby_generator
-#endif // NET_GRPC_COMPILER_RUBY_GENERATOR_MAP_INL_H_
+#endif // GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_MAP_INL_H