diff --git a/lib/web/JsonpMainTemplatePlugin.js b/lib/web/JsonpMainTemplatePlugin.js
index 1f3a195fc05..18252bd3251 100644
--- a/lib/web/JsonpMainTemplatePlugin.js
+++ b/lib/web/JsonpMainTemplatePlugin.js
@@ -98,7 +98,7 @@ class JsonpMainTemplatePlugin {
 						? `script.type = ${JSON.stringify(jsonpScriptType)};`
 						: "",
 					"script.charset = 'utf-8';",
-					`script.timeout = ${chunkLoadTimeout};`,
+					`script.timeout = ${chunkLoadTimeout / 1000};`,
 					crossOriginLoading
 						? `script.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
 						: "",