diff --git a/lib/util.js b/lib/util.js
index f0b7285fe010..4b539088c97e 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -378,10 +378,9 @@ function debuglog(set) {
  * in the best way possible given the different types.
  *
  * @param {any} value The value to print out.
- * @param {Object} opts Optional options object that alters the output.
+ * @param {Object} options Optional options object that alters the output.
  */
-/* Legacy: value, showHidden, depth, colors */
-function inspect(value, opts) {
+function inspect(value, options) {
   // Default options
   const ctx = {
     seen: [],
@@ -398,22 +397,15 @@ function inspect(value, opts) {
     indentationLvl: 0,
     compact: inspectDefaultOptions.compact
   };
-  // Legacy...
-  if (arguments.length > 2) {
-    if (arguments[2] !== undefined) {
-      ctx.depth = arguments[2];
-    }
-    if (arguments.length > 3 && arguments[3] !== undefined) {
-      ctx.colors = arguments[3];
-    }
-  }
   // Set user-specified options
-  if (typeof opts === 'boolean') {
-    ctx.showHidden = opts;
-  } else if (opts) {
-    const optKeys = Object.keys(opts);
-    for (var i = 0; i < optKeys.length; i++) {
-      ctx[optKeys[i]] = opts[optKeys[i]];
+  if (options !== undefined) {
+    if (typeof options !== 'object') {
+      throw new ERR_INVALID_ARG_TYPE('options', 'Object', options);
+    } else {
+      const optKeys = Object.keys(options);
+      for (var i = 0; i < optKeys.length; i++) {
+        ctx[optKeys[i]] = options[optKeys[i]];
+      }
     }
   }
   if (ctx.colors) ctx.stylize = stylizeWithColor;