diff --git a/block.py b/block.py
index 47d00fb..8e49b1a 100644
--- a/block.py
+++ b/block.py
@@ -293,6 +293,7 @@ class MTMap:
         for block in self.blocks:
             if num_saved%50 == 0:
                 print("Saved", num_saved, "blocks")
+                conn.commit()
             num_saved += 1
             cur.execute("INSERT INTO blocks VALUES (?,?)",
                         (self.getBlockAsInteger(block.pos),