diff --git a/src/Fieldtypes/ImportMappingsFieldtype.php b/src/Fieldtypes/ImportMappingsFieldtype.php
index 4fdf5b9..15fc759 100644
--- a/src/Fieldtypes/ImportMappingsFieldtype.php
+++ b/src/Fieldtypes/ImportMappingsFieldtype.php
@@ -53,7 +53,7 @@ public function process($data): array
                     return null;
                 }
 
-                return $fields->addValues($values)->process()->values()->all();
+                return $fields->addValues($values)->process()->values()->filter()->all();
             })
             ->filter()
             ->all();