diff --git a/server/util/simpleSerialize.ts b/server/util/simpleSerialize.ts
index 8478208..f421fdd 100644
--- a/server/util/simpleSerialize.ts
+++ b/server/util/simpleSerialize.ts
@@ -1,7 +1,7 @@
 import { isInteger, isString } from "lodash-es";
 
 export function simpleSerialize(...values : (string|number)[]): string{
-  const result = [];
+  const result: string[] = [];
   for(const value of values){
     if(isString(value)){
       result.push(`str(${value.length},${value})`);