diff --git a/src/databases/databases.js b/src/databases/databases.js
index 7c3991f..d7008a0 100644
--- a/src/databases/databases.js
+++ b/src/databases/databases.js
@@ -49,11 +49,11 @@ function ugradeDB(db, prefix) {
   let versionCodeInfo = db.prepare("SELECT value FROM config WHERE key = ?").get("version");
   let versionCode = versionCodeInfo ? versionCodeInfo.value : 0;
 
-  let path = config.schemaFolder + "/_upgrade_" + prefix + "_" + (versionCode + 1) + ".sql";
+  let path = config.schemaFolder + "/_upgrade_" + prefix + "_" + (parseInt(versionCode) + 1) + ".sql";
   while (fs.existsSync(path)) {
     db.exec(fs.readFileSync(path).toString());
 
     versionCode = db.prepare("SELECT value FROM config WHERE key = ?").get("version").value;
-    path = config.schemaFolder + "/_upgrade_" + prefix + "_" + (versionCode + 1) + ".sql";
+    path = config.schemaFolder + "/_upgrade_" + prefix + "_" + (parseInt(versionCode) + 1) + ".sql";
   }
 }
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