diff --git a/libs/binder/Value.cpp b/libs/binder/Value.cpp
index 85cd739..2b263ed 100644
--- a/libs/binder/Value.cpp
+++ b/libs/binder/Value.cpp
@@ -143,12 +143,12 @@
 
 // ====================================================================
 
-Value::Value() : mContent(NULL)
+Value::Value() : mContent(nullptr)
 {
 }
 
 Value::Value(const Value& value)
-    : mContent(value.mContent ? value.mContent->clone() : NULL)
+    : mContent(value.mContent ? value.mContent->clone() : nullptr)
 {
 }
 
@@ -165,8 +165,8 @@
         return true;
     }
 
-    if ( (lhs.mContent == NULL)
-      || (rhs.mContent == NULL)
+    if ( (lhs.mContent == nullptr)
+      || (rhs.mContent == nullptr)
     ) {
         return false;
     }
@@ -186,25 +186,25 @@
         delete mContent;
         mContent = rhs.mContent
             ? rhs.mContent->clone()
-            : NULL;
+            : nullptr;
     }
     return *this;
 }
 
 bool Value::empty() const
 {
-    return mContent == NULL;
+    return mContent == nullptr;
 }
 
 void Value::clear()
 {
     delete mContent;
-    mContent = NULL;
+    mContent = nullptr;
 }
 
 int32_t Value::parcelType() const
 {
-    const void* t_info(mContent ? mContent->type_ptr() : NULL);
+    const void* t_info(mContent ? mContent->type_ptr() : nullptr);
 
     if (t_info == internal_type_ptr<bool>()) return VAL_BOOLEAN;
     if (t_info == internal_type_ptr<uint8_t>()) return VAL_BYTE;
@@ -381,7 +381,7 @@
     int32_t value_type = VAL_NULL;
 
     delete mContent;
-    mContent = NULL;
+    mContent = nullptr;
 
     RETURN_IF_FAILED(parcel->readInt32(&value_type));