diff --git a/lib/mbtiles.js b/lib/mbtiles.js
index 66e5fd5..7e7f069 100644
--- a/lib/mbtiles.js
+++ b/lib/mbtiles.js
@@ -560,7 +560,7 @@ MBTiles.prototype.putTile = function(z, x, y, data, callback) {
     this._mapCache[coords].tile_id = id;
 
     // Only commit when we can insert at least 100 rows.
-    if (++this._pending < 100) return this._commit(callback);
+    if (++this._pending >= 100) return this._commit(callback);
     else return callback(null);
 };
 
@@ -599,7 +599,7 @@ MBTiles.prototype.putGrid = function(z, x, y, data, callback) {
     this._mapCache[coords].grid_id = id;
 
     // Only commit when we can insert at least 100 rows.
-    if (++this._pending < 100) return this._commit(callback);
+    if (++this._pending >= 100) return this._commit(callback);
     else return callback(null);
 };