diff --git a/SeedDMS_Core/Core/inc.ClassTransmittal.php b/SeedDMS_Core/Core/inc.ClassTransmittal.php
index 96e2acbac..d6e23104b 100644
--- a/SeedDMS_Core/Core/inc.ClassTransmittal.php
+++ b/SeedDMS_Core/Core/inc.ClassTransmittal.php
@@ -229,8 +229,9 @@ class SeedDMS_Core_Transmittal {
 
 		$size = 0;
 		foreach ($this->_items as $item) {
-			$content = $item->getContent();
-			$size += $content->getFileSize();
+			if($content = $item->getContent()) {
+				$size += $content->getFileSize();
+			}
 		}
 		return $size;
 	} /* }}} */