diff --git a/src/Agent.php b/src/Agent.php
index 7fd4d03..a1549f0 100644
--- a/src/Agent.php
+++ b/src/Agent.php
@@ -320,6 +320,10 @@ public function version($propertyName, $type = self::VERSION_TYPE_STRING)
             $properties[$propertyName] = (array) $properties[$propertyName];
 
             foreach ($properties[$propertyName] as $propertyMatchString) {
+                if (is_array($propertyMatchString)) {
+                    $propertyMatchString = implode("|", $propertyMatchString);
+                }
+
                 $propertyPattern = str_replace('[VER]', self::VER, $propertyMatchString);
 
                 // Identify and extract the version.
@@ -347,10 +351,6 @@ protected static function mergeRules(...$all)
 
         foreach ($all as $rules) {
             foreach ($rules as $key => $value) {
-                if (is_array($value)) {
-                    $value = implode('|', $value);
-                }
-
                 if (empty($merged[$key])) {
                     $merged[$key] = $value;
                 } elseif (is_array($merged[$key])) {