diff --git a/src/node.cc b/src/node.cc
index f9bbc24eac9a0e..64bbfaac48af71 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -1454,7 +1454,7 @@ enum encoding ParseEncoding(const char* encoding,
   } else if (StringEqualNoCase(encoding, "latin1")) {
     return LATIN1;
   } else if (StringEqualNoCase(encoding, "binary")) {
-    return BINARY;
+    return LATIN1;  // BINARY is a deprecated alias of LATIN1.
   } else if (StringEqualNoCase(encoding, "buffer")) {
     return BUFFER;
   } else if (StringEqualNoCase(encoding, "hex")) {
diff --git a/src/node.h b/src/node.h
index 4a1eac0644ffc4..c744c3e1d29f05 100644
--- a/src/node.h
+++ b/src/node.h
@@ -284,7 +284,9 @@ inline void NODE_SET_PROTOTYPE_METHOD(v8::Local<v8::FunctionTemplate> recv,
 }
 #define NODE_SET_PROTOTYPE_METHOD node::NODE_SET_PROTOTYPE_METHOD
 
-enum encoding {ASCII, UTF8, BASE64, UCS2, LATIN1, BINARY, HEX, BUFFER};
+// BINARY is a deprecated alias of LATIN1.
+enum encoding {ASCII, UTF8, BASE64, UCS2, BINARY, HEX, BUFFER, LATIN1 = BINARY};
+
 NODE_EXTERN enum encoding ParseEncoding(
     v8::Isolate* isolate,
     v8::Local<v8::Value> encoding_v,
diff --git a/src/string_bytes.cc b/src/string_bytes.cc
index 11b072adc2ebae..668a3b1efe2875 100644
--- a/src/string_bytes.cc
+++ b/src/string_bytes.cc
@@ -283,7 +283,6 @@ size_t StringBytes::Write(Isolate* isolate,
   switch (encoding) {
     case ASCII:
     case LATIN1:
-    case BINARY:
       if (is_extern && str->IsOneByte()) {
         memcpy(buf, data, nbytes);
       } else {
@@ -388,8 +387,7 @@ size_t StringBytes::StorageSize(Isolate* isolate,
   size_t data_size = 0;
   bool is_buffer = Buffer::HasInstance(val);
 
-  if (is_buffer &&
-      (encoding == BUFFER || encoding == BINARY || encoding == LATIN1)) {
+  if (is_buffer && (encoding == BUFFER || encoding == LATIN1)) {
     return Buffer::Length(val);
   }
 
@@ -398,7 +396,6 @@ size_t StringBytes::StorageSize(Isolate* isolate,
   switch (encoding) {
     case ASCII:
     case LATIN1:
-    case BINARY:
       data_size = str->Length();
       break;
 
@@ -439,8 +436,7 @@ size_t StringBytes::Size(Isolate* isolate,
   size_t data_size = 0;
   bool is_buffer = Buffer::HasInstance(val);
 
-  if (is_buffer &&
-      (encoding == BUFFER || encoding == BINARY || encoding == LATIN1))
+  if (is_buffer && (encoding == BUFFER || encoding == LATIN1))
     return Buffer::Length(val);
 
   const char* data;
@@ -452,7 +448,6 @@ size_t StringBytes::Size(Isolate* isolate,
   switch (encoding) {
     case ASCII:
     case LATIN1:
-    case BINARY:
       data_size = str->Length();
       break;
 
@@ -656,7 +651,6 @@ Local<Value> StringBytes::Encode(Isolate* isolate,
       break;
 
     case LATIN1:
-    case BINARY:
       if (buflen < EXTERN_APEX)
         val = OneByteString(isolate, buf, buflen);
       else
diff --git a/test/addons/parse-encoding/binding.cc b/test/addons/parse-encoding/binding.cc
index def91901f06d09..062e9cb275f082 100644
--- a/test/addons/parse-encoding/binding.cc
+++ b/test/addons/parse-encoding/binding.cc
@@ -12,6 +12,8 @@ namespace {
   V(UCS2)               \
   V(UTF8)               \
 
+static_assert(node::BINARY == node::LATIN1, "BINARY == LATIN1");
+
 void ParseEncoding(const v8::FunctionCallbackInfo<v8::Value>& args) {
   const node::encoding encoding =
       node::ParseEncoding(args.GetIsolate(), args[0],