diff --git a/SQLite.playground/Contents.swift b/SQLite.playground/Contents.swift
index c089076d..945adb50 100644
--- a/SQLite.playground/Contents.swift
+++ b/SQLite.playground/Contents.swift
@@ -99,5 +99,5 @@ db.createAggregation("customConcat",
                      initialValue: "users:",
                      reduce: reduce,
                      result: { $0 })
-let result = db.prepare("SELECT customConcat(email) FROM users").scalar() as! String
+let result = try db.prepare("SELECT customConcat(email) FROM users").scalar() as! String
 print(result)