diff --git a/reference/hash/functions/hash-hmac-file.xml b/reference/hash/functions/hash-hmac-file.xml
index 00fa1977d9a9..b98c42d969f6 100644
--- a/reference/hash/functions/hash-hmac-file.xml
+++ b/reference/hash/functions/hash-hmac-file.xml
@@ -98,7 +98,8 @@
        <entry>
         Now throws a <classname>ValueError</classname> exception if
         <parameter>algo</parameter> is unknown or is a non-cryptographic hash
-        function; previously, &false; was returned instead.
+        function; previously, &false; was returned
+        and an <constant>E_WARNING</constant> message was emitted.
        </entry>
       </row>
       <row>
diff --git a/reference/hash/functions/hash-hmac.xml b/reference/hash/functions/hash-hmac.xml
index c2a28f6799e4..b8c0797a4bcc 100644
--- a/reference/hash/functions/hash-hmac.xml
+++ b/reference/hash/functions/hash-hmac.xml
@@ -98,7 +98,8 @@
        <entry>
         Now throws a <classname>ValueError</classname> exception if
         <parameter>algo</parameter> is unknown or is a
-        non-cryptographic hash function; previously, &false; was returned instead.
+        non-cryptographic hash function; previously, &false; was returned
+        and an <constant>E_WARNING</constant> message was emitted.
        </entry>
       </row>
       <row>
diff --git a/reference/hash/functions/hash.xml b/reference/hash/functions/hash.xml
index 598d21f4792e..a6675b8f4581 100644
--- a/reference/hash/functions/hash.xml
+++ b/reference/hash/functions/hash.xml
@@ -89,7 +89,8 @@
        <entry>8.0.0</entry>
        <entry>
         <function>hash</function> now throws a <classname>ValueError</classname> exception
-        if <parameter>algo</parameter> is unknown; previously, &false; was returned instead.
+        if <parameter>algo</parameter> is unknown; previously, &false; was returned
+        and an <constant>E_WARNING</constant> message was emitted.
        </entry>
       </row>
      </tbody>