diff --git a/classes/pref_prefs.php b/classes/pref_prefs.php
index 624557f9a..78c66124a 100644
--- a/classes/pref_prefs.php
+++ b/classes/pref_prefs.php
@@ -461,7 +461,7 @@ class Pref_Prefs extends Protected_Handler {
 					onclick=\"insertSSLserial('')\">" .
 					__('Clear') . "</button>";
 
-			} else if ($pref_name = 'DIGEST_RPEFERRED_TIME') {
+			} else if ($pref_name == 'DIGEST_PREFERRED_TIME') {
 				print "<input dojoType=\"dijit.form.ValidationTextBox\"
 					id=\"$pref_name\" regexp=\"[012]\d:\d\d\" placeHolder=\"12:00\"
 					name=\"$pref_name\" value=\"$value\"><div class=\"insensitive\">".