diff --git a/src/index.ts b/src/index.ts
index f10e48f..b836d1a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -114,12 +114,12 @@ switch (argv.e) {
 let engine = new Engine(driver, {
     host: argv.h,
     port: parseInt(argv.p) || standardPort,
-    databaseName: argv.d,
-    user: argv.u,
-    password: argv.x,
+    databaseName: argv.d.toString(),
+    user: argv.u.toString(),
+    password: argv.x.toString(),
     databaseType: argv.e,
-    resultsPath: argv.o,
-    schemaName: argv.s || standardSchema,
+    resultsPath: argv.o.toString(),
+    schemaName: argv.s.toString() || standardSchema,
     ssl: argv.ssl,
     noConfigs: argv.noConfig,
     convertCaseFile: argv.cf,