diff --git a/Packages/vChewing_Hotenka/Sources/Hotenka/HotenkaChineseConverter.swift b/Packages/vChewing_Hotenka/Sources/Hotenka/HotenkaChineseConverter.swift
index 202ecc0a..12305c12 100644
--- a/Packages/vChewing_Hotenka/Sources/Hotenka/HotenkaChineseConverter.swift
+++ b/Packages/vChewing_Hotenka/Sources/Hotenka/HotenkaChineseConverter.swift
@@ -80,6 +80,7 @@ public class HotenkaChineseConverter {
       ptrSQL = nil
       return
     }
+    sqlite3_exec(ptrSQL, "PRAGMA journal_mode = OFF;", nil, nil, nil)
   }
 
   public init(plistDir: String) {
diff --git a/Packages/vChewing_Hotenka/Tests/HotenkaTests/HotenkaTests_SQLite.swift b/Packages/vChewing_Hotenka/Tests/HotenkaTests/HotenkaTests_SQLite.swift
index 16337a1b..c9be2a3e 100644
--- a/Packages/vChewing_Hotenka/Tests/HotenkaTests/HotenkaTests_SQLite.swift
+++ b/Packages/vChewing_Hotenka/Tests/HotenkaTests/HotenkaTests_SQLite.swift
@@ -51,6 +51,10 @@ extension HotenkaTests {
       sqlite3_exec(ptrSQL, "PRAGMA synchronous = OFF;", nil, nil, nil) == SQLITE_OK,
       "HOTENKA: SQLite synchronous OFF failed."
     )
+    XCTAssertTrue(
+      sqlite3_exec(ptrSQL, "PRAGMA journal_mode = OFF;", nil, nil, nil) == SQLITE_OK,
+      "HOTENKA: SQLite journal_mode OFF failed."
+    )
 
     let sqlMakeTableHotenka = """
     DROP TABLE IF EXISTS DATA_HOTENKA;