diff --git a/spec.emu b/spec.emu
index 494d2c5..83e39a8 100644
--- a/spec.emu
+++ b/spec.emu
@@ -24,8 +24,8 @@ contributors: James M Snell
         1. If _message_ is not *undefined*, then
           1. Let _msg_ be ? ToString(_message_).
           1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
-        1. Perform ? InstallErrorCause(_O_, _options_).
-        1. <ins>Perform ? InstallErrorCode(_O_, _options_).</ins>
+        1. <del>Perform ? InstallErrorCause(_O_, _options_).</del>
+        1. <ins>Perform ? InstallErrorOwnProperties(_O_, _options_).</ins>
         1. Return _O_.
       </emu-alg>
     </emu-clause>
@@ -46,8 +46,8 @@ contributors: James M Snell
           1. If _message_ is not *undefined*, then
             1. Let _msg_ be ? ToString(_message_).
             1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
-          1. Perform ? InstallErrorCause(_O_, _options_).
-          1. <ins>Perform ? InstallErrorCode(_O_, _options_).</ins>
+          1. <del>Perform ? InstallErrorCause(_O_, _options_).</del>
+          1. <ins>Perform ? InstallErrorOwnProperties(_O_, _options_).</ins>
           1. Return _O_.
         </emu-alg>
       </emu-clause>
@@ -69,8 +69,8 @@ contributors: James M Snell
           1. If _message_ is not *undefined*, then
             1. Let _msg_ be ? ToString(_message_).
             1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _msg_).
-          1. Perform ? InstallErrorCause(_O_, _options_).
-          1. <ins>Perform ? InstallErrorCode(_O_, _options_).</ins>
+          1. <del>Perform ? InstallErrorCause(_O_, _options_).</del>
+          1. <ins>Perform ? InstallErrorOwnProperties(_O_, _options_).</ins>
           1. Let _errorsList_ be ? IteratorToList(? GetIterator(_errors_, ~sync~)).
           1. Perform ! DefinePropertyOrThrow(_O_, *"errors"*, PropertyDescriptor { [[Configurable]]: *true*, [[Enumerable]]: *false*, [[Writable]]: *true*, [[Value]]: CreateArrayFromList(_errorsList_) }).
           1. Return _O_.
@@ -94,8 +94,8 @@ contributors: James M Snell
           1. If _message_ is not *undefined*, then
             1. Let _messageString_ be ? ToString(_message_).
             1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"message"*, _messageString_).
-          1. Perform ? InstallErrorCause(_O_, _options_).
-          1. <ins>Perform ? InstallErrorCode(_O_, _options_).</ins>
+          1. <del>Perform ? InstallErrorCause(_O_, _options_).</del>
+          1. <ins>Perform ? InstallErrorOwnProperties(_O_, _options_).</ins>
           1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"error"*, _error_).
           1. Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"suppressed"*, _suppressed_).
           1. Return _O_.
@@ -107,21 +107,25 @@ contributors: James M Snell
   <emu-clause id="sec-error-objects-abstract-operations">
     <h1>Abstract Operations for Error Objects</h1>
 
-    <emu-clause id="sec-installerrorcode" type="abstract operation">
+    <emu-clause id="sec-installerrorownproperties" type="abstract operation">
       <h1>
-        <ins>InstallErrorCode (
+        <ins>InstallErrorOwnProperties (
           _O_: an Object,
           _options_: an ECMAScript language value,
         ): either a normal completion containing ~unused~ or a throw completion</ins>
       </h1>
       <dl class="header">
         <dt>description</dt>
-        <dd><ins>It is used to create a *"code"* property on _O_ when a *"code"* property is present on _options_.</ins></dd>
+        <dd><ins>It is used to create *"cause"* and *"code"* properties on _O_ when the corresponding properties are present on _options_.</ins></dd>
       </dl>
       <emu-alg>
-        1. <ins>If _options_ is an Object and ? HasProperty(_options_, *"code"*) is *true*, then</ins>
-          1. <ins>Let _code_ be ? Get(_options_, *"code"*).</ins>
-          1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"code"*, _code_).</ins>
+        1. <ins>If _options_ is an Object, then</ins>
+          1. <ins>If ? HasProperty(_options_, *"cause"*) is *true*, then</ins>
+            1. <ins>Let _cause_ be ? Get(_options_, *"cause"*).</ins>
+            1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"cause"*, _cause_).</ins>
+          1. <ins>If ? HasProperty(_options_, *"code"*) is *true*, then</ins>
+            1. <ins>Let _code_ be ? Get(_options_, *"code"*).</ins>
+            1. <ins>Perform CreateNonEnumerableDataPropertyOrThrow(_O_, *"code"*, _code_).</ins>
         1. <ins>Return ~unused~.</ins>
       </emu-alg>
     </emu-clause>