diff --git a/app/config/collections2.php b/app/config/collections2.php
index 6ded2ab626..ce59a1d1b0 100644
--- a/app/config/collections2.php
+++ b/app/config/collections2.php
@@ -446,7 +446,7 @@ $collections = [
                 '$id' => 'ip',
                 'type' => Database::VAR_STRING,
                 'format' => '',
-                'size' => 15,
+                'size' => 45, // https://stackoverflow.com/a/166157/2299554
                 'signed' => true,
                 'required' => false,
                 'default' => null,