1 files changed, 4 insertions, 4 deletions
diff --git a/src/node_crypto_bio.h b/src/node_crypto_bio.h
index 1f5657fbf1..bac79bab0b 100644
--- a/src/node_crypto_bio.h
+++ b/src/node_crypto_bio.h
@@ -32,8 +32,8 @@ class NodeBIO {
  public:
   NodeBIO() : initial_(kInitialBufferLength),
               length_(0),
-              read_head_(NULL),
-              write_head_(NULL) {
+              read_head_(nullptr),
+              write_head_(nullptr) {
   }
 
   ~NodeBIO();
@@ -89,7 +89,7 @@ class NodeBIO {
   }
 
   static inline NodeBIO* FromBIO(BIO* bio) {
-    CHECK_NE(bio->ptr, NULL);
+    CHECK_NE(bio->ptr, nullptr);
     return static_cast<NodeBIO*>(bio->ptr);
   }
 
@@ -113,7 +113,7 @@ class NodeBIO {
     explicit Buffer(size_t len) : read_pos_(0),
                                   write_pos_(0),
                                   len_(len),
-                                  next_(NULL) {
+                                  next_(nullptr) {
       data_ = new char[len];
     }