diff --git a/sqlite3.go b/sqlite3.go
index 454e42d..6b74f7f 100644
--- a/sqlite3.go
+++ b/sqlite3.go
@@ -286,7 +286,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 			}
 		}
 
-		dsn = dsn[:pos-1]
+		dsn = dsn[:pos]
 	}
 
 	var db *C.sqlite3