diff --git a/sqlite3_vtable.go b/sqlite3_vtable.go
index e86a06b..54671af 100644
--- a/sqlite3_vtable.go
+++ b/sqlite3_vtable.go
@@ -2,6 +2,7 @@
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.
+// +build vtable
 
 package sqlite3