diff --git a/src/Mysql/MysqlDriver.php b/src/Mysql/MysqlDriver.php
index d7fb837e0..ddaeb380e 100644
--- a/src/Mysql/MysqlDriver.php
+++ b/src/Mysql/MysqlDriver.php
@@ -667,6 +667,12 @@ public function insertObject($table, &$object, $key = null)
 				continue;
 			}
 
+			// Ignore null integer fields.
+			if (stristr($tableColumns[$k], 'int') !== false && $v === '')
+			{
+				continue;
+			}
+
 			// Prepare and sanitize the fields and values for the database query.
 			$fields[] = $this->quoteName($k);
 			$values[] = $this->quote($v);
diff --git a/src/Mysql/MysqlImporter.php b/src/Mysql/MysqlImporter.php
index 3fc416fcb..3a2fcad2b 100644
--- a/src/Mysql/MysqlImporter.php
+++ b/src/Mysql/MysqlImporter.php
@@ -259,7 +259,7 @@ protected function getColumnSql(\SimpleXMLElement $field)
 			else
 			{
 				// TODO Don't quote numeric values.
-				if (strpos($fDefault, 'CURRENT') !== false)
+				if (stristr($fDefault, 'CURRENT') !== false)
 				{
 					$sql .= ' NOT NULL DEFAULT CURRENT_TIMESTAMP()';
 				}
diff --git a/src/Mysqli/MysqliDriver.php b/src/Mysqli/MysqliDriver.php
index e9c00c3a0..dedd13cbd 100644
--- a/src/Mysqli/MysqliDriver.php
+++ b/src/Mysqli/MysqliDriver.php
@@ -748,6 +748,12 @@ public function insertObject($table, &$object, $key = null)
 				continue;
 			}
 
+			// Ignore null integer fields.
+			if (stristr($tableColumns[$k], 'int') !== false && $v === '')
+			{
+				continue;
+			}
+
 			// Prepare and sanitize the fields and values for the database query.
 			$fields[] = $this->quoteName($k);
 			$values[] = $this->quote($v);
diff --git a/src/Mysqli/MysqliImporter.php b/src/Mysqli/MysqliImporter.php
index 0e0d9ef50..79a8cfc6c 100644
--- a/src/Mysqli/MysqliImporter.php
+++ b/src/Mysqli/MysqliImporter.php
@@ -298,7 +298,7 @@ protected function getColumnSql(\SimpleXMLElement $field)
 			else
 			{
 				// TODO Don't quote numeric values.
-				if (strpos($fDefault, 'CURRENT') !== false)
+				if (stristr($fDefault, 'CURRENT') !== false)
 				{
 					$sql .= ' NOT NULL DEFAULT CURRENT_TIMESTAMP()';
 				}