diff --git a/src/frontend/src/components/core/parameterRenderComponent/components/inputFileComponent/index.tsx b/src/frontend/src/components/core/parameterRenderComponent/components/inputFileComponent/index.tsx
index 28eabb240..ddc30eda7 100644
--- a/src/frontend/src/components/core/parameterRenderComponent/components/inputFileComponent/index.tsx
+++ b/src/frontend/src/components/core/parameterRenderComponent/components/inputFileComponent/index.tsx
@@ -80,7 +80,7 @@ export default function InputFileComponent({
             // Show an error if the file type is not allowed
             setErrorData({
               title: INVALID_FILE_ALERT,
-              list: fileTypes,
+              list: [fileTypes?.join(", ") || ""],
             });
           }
         }