diff --git a/gen_pc_sidecar.php b/gen_pc_sidecar.php
index 2eceb7d..b690119 100755
--- a/gen_pc_sidecar.php
+++ b/gen_pc_sidecar.php
@@ -78,7 +78,7 @@ function pull_db(): array {
     return $pbdb;
   }
 
-function filter_extensions(array &$pbdb): null {
+function filter_extensions(array &$pbdb) {
   global $LIST_FILTER_TYPE;
 
   if ($LIST_FILTER_TYPE == "whitelist") {
@@ -146,7 +146,7 @@ function blacklist_extension_filter(array &$pbdb) {
   }));
 }
 
-function prepend_contact_list(array &$pbdb): null {
+function prepend_contact_list(array &$pbdb) {
   global $PREPEND_EXTENSIONS;
   array_unshift($pbdb, ...$PREPEND_EXTENSIONS);
 }