diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index d92cfb0..0af7e6a 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -115,6 +115,7 @@
     // used to override the RefBase destruction.
     class Destroyer {
         friend class RefBase;
+        friend class weakref_type;
     public:
         virtual ~Destroyer();
     private:
diff --git a/opengl/tests/gl_jni/jni/gl_code.cpp b/opengl/tests/gl_jni/jni/gl_code.cpp
index f031c79..ef66841 100644
--- a/opengl/tests/gl_jni/jni/gl_code.cpp
+++ b/opengl/tests/gl_jni/jni/gl_code.cpp
@@ -181,4 +181,3 @@
 {
     background = 1.0f - background;
 }
-