diff --git a/packages/nocodb-sdk/src/lib/formulaHelpers.ts b/packages/nocodb-sdk/src/lib/formulaHelpers.ts
index 6b9450e0d8..3b472b47ef 100644
--- a/packages/nocodb-sdk/src/lib/formulaHelpers.ts
+++ b/packages/nocodb-sdk/src/lib/formulaHelpers.ts
@@ -1019,7 +1019,7 @@ export const formulas: Record<string, FormulaMeta> = {
             'String type is expected'
           );
         }
-        for(const i in [1,2]) {
+        for(const i of [1,2]) {
           if (argTypes[i] !== FormulaDataTypes.NUMERIC) {
             throw new FormulaError(
               FormulaErrorType.INVALID_ARG,