diff --git a/ChangeLog b/ChangeLog
index bcf53723..29da1c9c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,11 +1,14 @@
 1.9.39
+Core:
+  * FIX: Fix PHP 5.4 compatibility issue (syntax error, unexpected ':', expecting '{' in)
+  * FIX: Fix PHP 8.2 deprecation warnings caused by std_speedometer gadget
+
 
 1.9.38
 Frontend:
   * FIX: Fix XSS vulnerability
   * FIX: Fix PHP 8.2 deprecation warnings caused by shapes on automaps and host alias
   * FIX: Fix PHP 8.2 deprecation warnings caused by gettext.inc
-  * FIX: Fix PHP 8.2 deprecation warnings caused by std_speedometer gadget
 
 1.9.37
 Frontend:
diff --git a/share/server/core/functions/oldPhpVersionFixes.php b/share/server/core/functions/oldPhpVersionFixes.php
index b9b1b037..bfc3eb1e 100644
--- a/share/server/core/functions/oldPhpVersionFixes.php
+++ b/share/server/core/functions/oldPhpVersionFixes.php
@@ -57,7 +57,7 @@ function date_default_timezone_set($timezone_identifier) {
 // PHP 8.2 deprecates utf8_encode. To stay compatible with older installations
 // and installations not providing the mbstring extension, we implement an approach
 // which defaults to mbstring and falls back to a polyfill.
-function iso8859_1_to_utf8(string $s): string {
+function iso8859_1_to_utf8($s) {
     if (function_exists("mb_convert_encoding")) {
         return mb_convert_encoding($s, 'UTF-8', 'ISO-8859-1');
     }