diff --git a/Helper/ImportHelper.php b/Helper/ImportHelper.php
index 8dadc3d..cd340e4 100644
--- a/Helper/ImportHelper.php
+++ b/Helper/ImportHelper.php
@@ -274,8 +274,7 @@ public function downloadVisualFromUrl($attributeValue, $attributeCode)
 
             // Check visual
             if (filesize($visualPath) < self::EXIF_IMAGETYPE_FILE_MIN_SIZE || exif_imagetype($visualPath) === false) {
-                $errorMessage = sprintf('Visual not valid for url %s', $attributeValue);
-                throw new \Exception($errorMessage);
+                return null;
             }
         }
 
diff --git a/README.md b/README.md
index 5bad51c..b6fc3ee 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,8 @@ Import mapping example:
         {
             "attributeCode": "lens_height",
             "dataCode": "hauteurVerre",
-            "callback": "setMetricUnitAsSuffix"
+            "callback": "setMetricUnitAsSuffix",
+            "deleteIfNull": true
         },
         {
             "attributeCode": "universe",
@@ -126,6 +127,7 @@ Mapping explanation:
 * `onlyOnCreation`: Set attribute value only if product is new (checked with `identifier` attribute)
 * `locales`: Used to set same attribute value for different locales
 * `completeCallback`: Used to add some more fields with **ImportHelper**
+* `deleteIfNull': Remove key from item mapping if value is null
 
 ### Export
 
diff --git a/Reader/File/Csv/ProductAdvancedReader.php b/Reader/File/Csv/ProductAdvancedReader.php
index e00429d..cc2c7c6 100644
--- a/Reader/File/Csv/ProductAdvancedReader.php
+++ b/Reader/File/Csv/ProductAdvancedReader.php
@@ -106,6 +106,13 @@ class ProductAdvancedReader extends ProductReader implements InitializableInterf
      */
     const MAPPING_MAX_LENGTH_KEY = 'maxLength';
 
+    /**
+     * Delete if null key
+     *
+     * @var string
+     */
+    const MAPPING_DELETE_IF_NULL = 'deleteIfNull';
+
     /**
      * Import helper
      *
@@ -359,6 +366,15 @@ protected function updateByMapping($item)
                         $value = mb_substr($value, 0, $attributeMapping[self::MAPPING_MAX_LENGTH_KEY]);
                     }
 
+                    // Don't add value if value is null
+                    if (
+                        isset($attributeMapping[self::MAPPING_DELETE_IF_NULL])
+                        && $attributeMapping[self::MAPPING_DELETE_IF_NULL] === true
+                        && $value === null
+                    ) {
+                        continue;
+                    }
+
                     $newItem[$attributesCode] = $value;
                 }
             }