diff --git a/compiler/utils/assembler.h b/compiler/utils/assembler.h
index 9d79002..c9be4ed 100644
--- a/compiler/utils/assembler.h
+++ b/compiler/utils/assembler.h
@@ -137,6 +137,7 @@
   // Next in linked list of slow paths
   SlowPath *next_;
 
+ private:
   friend class AssemblerBuffer;
   DISALLOW_COPY_AND_ASSIGN(SlowPath);
 };