diff --git a/Source/Modules/IMEModules/IME.swift b/Source/Modules/IMEModules/IME.swift
index 349c813c..c3c34aad 100644
--- a/Source/Modules/IMEModules/IME.swift
+++ b/Source/Modules/IMEModules/IME.swift
@@ -327,3 +327,9 @@ extension RangeReplaceableCollection where Element: Hashable {
 		return filter { set.insert($0).inserted }
 	}
 }
+
+// MARK: - Error Extension
+extension String: Error {}
+extension String: LocalizedError {
+	public var errorDescription: String? { return self }
+}