diff --git a/plugins/Chart/ChartCollector.py b/plugins/Chart/ChartCollector.py
index 776343af..82e54bb6 100644
--- a/plugins/Chart/ChartCollector.py
+++ b/plugins/Chart/ChartCollector.py
@@ -146,8 +146,7 @@ class ChartCollector(object):
 
         s = time.time()
         cur = self.db.getCursor()
-        cur.cursor.executemany("INSERT INTO data (type_id, value, date_added) VALUES (?, ?, ?)", values)
-        cur.close()
+        cur.executemany("INSERT INTO data (type_id, value, date_added) VALUES (?, ?, ?)", values)
         self.log.debug("Global collectors inserted in %.3fs" % (time.time() - s))
 
     def collectSites(self, sites, collectors, last_values):
@@ -163,8 +162,7 @@ class ChartCollector(object):
 
         s = time.time()
         cur = self.db.getCursor()
-        cur.cursor.executemany("INSERT INTO data (type_id, site_id, value, date_added) VALUES (?, ?, ?, ?)", values)
-        cur.close()
+        cur.executemany("INSERT INTO data (type_id, site_id, value, date_added) VALUES (?, ?, ?, ?)", values)
         self.log.debug("Site collectors inserted in %.3fs" % (time.time() - s))
 
     def collector(self):
diff --git a/plugins/Chart/ChartDb.py b/plugins/Chart/ChartDb.py
index 9dd4d3db..66a22082 100644
--- a/plugins/Chart/ChartDb.py
+++ b/plugins/Chart/ChartDb.py
@@ -48,15 +48,15 @@ class ChartDb(Db):
 
     def getTypeId(self, name):
         if name not in self.types:
-            self.execute("INSERT INTO type ?", {"name": name})
-            self.types[name] = self.cur.cursor.lastrowid
+            res = self.execute("INSERT INTO type ?", {"name": name})
+            self.types[name] = res.lastrowid
 
         return self.types[name]
 
     def getSiteId(self, address):
         if address not in self.sites:
-            self.execute("INSERT INTO site ?", {"address": address})
-            self.sites[address] = self.cur.cursor.lastrowid
+            res = self.execute("INSERT INTO site ?", {"address": address})
+            self.sites[address] = res.lastrowid
 
         return self.sites[address]