1 files changed, 7 insertions, 2 deletions
diff --git a/lib/internal/crypto/hash.js b/lib/internal/crypto/hash.js
index 38b125e5f2..7e4a83ca93 100644
--- a/lib/internal/crypto/hash.js
+++ b/lib/internal/crypto/hash.js
@@ -25,7 +25,8 @@ const {
   ERR_CRYPTO_HASH_UPDATE_FAILED,
   ERR_INVALID_ARG_TYPE
 } = require('internal/errors').codes;
-const { validateString, validateUint32 } = require('internal/validators');
+const { validateEncoding, validateString, validateUint32 } =
+  require('internal/validators');
 const { normalizeEncoding } = require('internal/util');
 const { isArrayBufferView } = require('internal/util/types');
 const LazyTransform = require('internal/streams/lazy_transform');
@@ -61,6 +62,8 @@ Hash.prototype._flush = function _flush(callback) {
 };
 
 Hash.prototype.update = function update(data, encoding) {
+  encoding = encoding || getDefaultEncoding();
+
   const state = this[kState];
   if (state[kFinalized])
     throw new ERR_CRYPTO_HASH_FINALIZED();
@@ -74,7 +77,9 @@ Hash.prototype.update = function update(data, encoding) {
                                    data);
   }
 
-  if (!this[kHandle].update(data, encoding || getDefaultEncoding()))
+  validateEncoding(data, encoding);
+
+  if (!this[kHandle].update(data, encoding))
     throw new ERR_CRYPTO_HASH_UPDATE_FAILED();
   return this;
 };