diff --git a/examples/vue-full/pages/star-wars/@id/+data.ts b/examples/vue-full/pages/star-wars/@id/+data.shared.ts
similarity index 100%
rename from examples/vue-full/pages/star-wars/@id/+data.ts
rename to examples/vue-full/pages/star-wars/@id/+data.shared.ts
diff --git a/vike/node/plugin/plugins/importUserCode/v1-design/getVikeConfig.ts b/vike/node/plugin/plugins/importUserCode/v1-design/getVikeConfig.ts
index c8297f7399..94ccd85d19 100644
--- a/vike/node/plugin/plugins/importUserCode/v1-design/getVikeConfig.ts
+++ b/vike/node/plugin/plugins/importUserCode/v1-design/getVikeConfig.ts
@@ -392,7 +392,6 @@ async function loadVikeConfig(userRootDir: string, outDirRoot: string, isDev: bo
               configName,
               interfaceFile.filePath.filePathToShowToUser
             )
-            configDef.env = deriveConfigEnvFromFileName(configDef.env, interfaceFile.filePath.fileName)
             if (!isConfigEnv(configDef, configName)) return
             const isAlreadyLoaded = interfacefileIsAlreaydLoaded(interfaceFile)
             if (isAlreadyLoaded) return
@@ -719,7 +718,7 @@ async function getConfigValueSource(
 ): Promise<ConfigValueSource> {
   const conf = interfaceFile.fileExportsByConfigName[configName]
   assert(conf)
-  const configEnv = configDef.env
+  const configEnv = deriveConfigEnvFromFileName(configDef.env, interfaceFile.filePath.fileName)
   const { locationId } = interfaceFile
 
   const definedAtFilePath_: DefinedAtFilePath = {