diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index e81cd00..51eff5a 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -80,9 +80,12 @@
         void                incWeak(const void* id);
         void                decWeak(const void* id);
         
+        // acquires a strong reference if there is already one.
         bool                attemptIncStrong(const void* id);
         
-        //! This is only safe if you have set OBJECT_LIFETIME_FOREVER.
+        // acquires a weak reference if there is already one.
+        // This is not always safe. see ProcessState.cpp and BpBinder.cpp
+        // for proper use.
         bool                attemptIncWeak(const void* id);
 
         //! DEBUGGING ONLY: Get current weak ref count.
@@ -122,8 +125,9 @@
     
     //! Flags for extendObjectLifetime()
     enum {
+        OBJECT_LIFETIME_STRONG  = 0x0000,
         OBJECT_LIFETIME_WEAK    = 0x0001,
-        OBJECT_LIFETIME_FOREVER = 0x0003
+        OBJECT_LIFETIME_MASK    = 0x0001
     };
     
             void            extendObjectLifetime(int32_t mode);
@@ -149,7 +153,7 @@
     
                             RefBase(const RefBase& o);
             RefBase&        operator=(const RefBase& o);
-            
+
         weakref_impl* const mRefs;
 };