diff --git a/dfp.module b/dfp.module
index 419511b..c4c30ef 100644
--- a/dfp.module
+++ b/dfp.module
@@ -532,6 +532,9 @@ function dfp_format_targeting($targeting, $tag = '') {
       continue;
     }
 
+    // Allow other modules to alter the target.
+    drupal_alter('dfp_target', $target);
+
     // Convert the values into an array and trim the whitespace from each value.
     $values = explode(',', $target['value']);
     $values = array_map('trim', $values);