diff --git a/repertory/librepertory/src/providers/encrypt/encrypt_provider.cpp b/repertory/librepertory/src/providers/encrypt/encrypt_provider.cpp
index e5e79a84..c778b26e 100644
--- a/repertory/librepertory/src/providers/encrypt/encrypt_provider.cpp
+++ b/repertory/librepertory/src/providers/encrypt/encrypt_provider.cpp
@@ -46,7 +46,7 @@ const std::map<std::string, std::string> sql_create_tables = {
          "source_path TEXT PRIMARY KEY ASC, "
          "api_path TEXT, "
          "data TEXT, "
-         "directory INTEGER"
+         "directory INTEGER NOT NULL"
          ");"},
     },
 };