diff --git a/compiler/image_writer.cc b/compiler/image_writer.cc
index 51ef440..d7b7403 100644
--- a/compiler/image_writer.cc
+++ b/compiler/image_writer.cc
@@ -697,7 +697,7 @@
   return true;
 }
 
-class ComputeLazyFieldsForClassesVisitor : public ClassVisitor {
+class ImageWriter::ComputeLazyFieldsForClassesVisitor : public ClassVisitor {
  public:
   bool operator()(ObjPtr<Class> c) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
     StackHandleScope<1> hs(Thread::Current());
@@ -837,7 +837,7 @@
   return true;
 }
 
-class NonImageClassesVisitor : public ClassVisitor {
+class ImageWriter::NonImageClassesVisitor : public ClassVisitor {
  public:
   explicit NonImageClassesVisitor(ImageWriter* image_writer) : image_writer_(image_writer) {}
 
@@ -1701,7 +1701,7 @@
   return reinterpret_cast<ArtMethod*>(image_info.image_begin_ + it->second.offset);
 }
 
-class FixupRootVisitor : public RootVisitor {
+class ImageWriter::FixupRootVisitor : public RootVisitor {
  public:
   explicit FixupRootVisitor(ImageWriter* image_writer) : image_writer_(image_writer) {
   }
@@ -1944,7 +1944,7 @@
 }
 
 // Rewrite all the references in the copied object to point to their image address equivalent
-class FixupVisitor {
+class ImageWriter::FixupVisitor {
  public:
   FixupVisitor(ImageWriter* image_writer, Object* copy) : image_writer_(image_writer), copy_(copy) {
   }
@@ -1980,7 +1980,7 @@
   mirror::Object* const copy_;
 };
 
-class FixupClassVisitor FINAL : public FixupVisitor {
+class ImageWriter::FixupClassVisitor FINAL : public FixupVisitor {
  public:
   FixupClassVisitor(ImageWriter* image_writer, Object* copy) : FixupVisitor(image_writer, copy) {
   }
@@ -2045,7 +2045,7 @@
   }
 }
 
-class NativeLocationVisitor {
+class ImageWriter::NativeLocationVisitor {
  public:
   explicit NativeLocationVisitor(ImageWriter* image_writer) : image_writer_(image_writer) {}
 
diff --git a/compiler/image_writer.h b/compiler/image_writer.h
index c9cf4cb..24fad46 100644
--- a/compiler/image_writer.h
+++ b/compiler/image_writer.h
@@ -582,14 +582,15 @@
   // Map of dex files to the indexes of oat files that they were compiled into.
   const std::unordered_map<const DexFile*, size_t>& dex_file_oat_index_map_;
 
-  friend class ContainsBootClassLoaderNonImageClassVisitor;
-  friend class FixupClassVisitor;
-  friend class FixupRootVisitor;
-  friend class FixupVisitor;
+  class ComputeLazyFieldsForClassesVisitor;
+  class FixupClassVisitor;
+  class FixupRootVisitor;
+  class FixupVisitor;
   class GetRootsVisitor;
-  friend class NativeLocationVisitor;
-  friend class NonImageClassesVisitor;
+  class NativeLocationVisitor;
+  class NonImageClassesVisitor;
   class VisitReferencesVisitor;
+
   DISALLOW_COPY_AND_ASSIGN(ImageWriter);
 };
 
diff --git a/patchoat/patchoat.cc b/patchoat/patchoat.cc
index 5dc1457..db28a3f 100644
--- a/patchoat/patchoat.cc
+++ b/patchoat/patchoat.cc
@@ -498,7 +498,7 @@
   return true;
 }
 
-class PatchOatArtFieldVisitor : public ArtFieldVisitor {
+class PatchOat::PatchOatArtFieldVisitor : public ArtFieldVisitor {
  public:
   explicit PatchOatArtFieldVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
 
@@ -517,7 +517,7 @@
   image_header->VisitPackedArtFields(&visitor, heap_->Begin());
 }
 
-class PatchOatArtMethodVisitor : public ArtMethodVisitor {
+class PatchOat::PatchOatArtMethodVisitor : public ArtMethodVisitor {
  public:
   explicit PatchOatArtMethodVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
 
@@ -558,7 +558,7 @@
       pointer_size);
 }
 
-class FixupRootVisitor : public RootVisitor {
+class PatchOat::FixupRootVisitor : public RootVisitor {
  public:
   explicit FixupRootVisitor(const PatchOat* patch_oat) : patch_oat_(patch_oat) {
   }
@@ -610,7 +610,7 @@
 }
 
 
-class RelocatedPointerVisitor {
+class PatchOat::RelocatedPointerVisitor {
  public:
   explicit RelocatedPointerVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
 
diff --git a/patchoat/patchoat.h b/patchoat/patchoat.h
index e7a3e91..a519631 100644
--- a/patchoat/patchoat.h
+++ b/patchoat/patchoat.h
@@ -230,10 +230,11 @@
 
   TimingLogger* timings_;
 
-  friend class FixupRootVisitor;
-  friend class RelocatedPointerVisitor;
-  friend class PatchOatArtFieldVisitor;
-  friend class PatchOatArtMethodVisitor;
+  class FixupRootVisitor;
+  class RelocatedPointerVisitor;
+  class PatchOatArtFieldVisitor;
+  class PatchOatArtMethodVisitor;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(PatchOat);
 };