diff --git a/crates/turbo-tasks-macros/src/value_macro.rs b/crates/turbo-tasks-macros/src/value_macro.rs
index 8b06032e0ba8b..c4393b2e73cde 100644
--- a/crates/turbo-tasks-macros/src/value_macro.rs
+++ b/crates/turbo-tasks-macros/src/value_macro.rs
@@ -242,6 +242,15 @@ pub fn value(args: TokenStream, input: TokenStream) -> TokenStream {
                 });
             }
         }
+        if inner_type.is_none() {
+            item.span()
+                .unwrap()
+                .error(
+                    "#[turbo_tasks::value(transparent)] is only valid with single-item unit \
+                     structs",
+                )
+                .emit();
+        }
     }
 
     let ident = match &item {
diff --git a/crates/turbopack-css/src/module_asset.rs b/crates/turbopack-css/src/module_asset.rs
index 2830f8e38b551..c622b18c1bd3b 100644
--- a/crates/turbopack-css/src/module_asset.rs
+++ b/crates/turbopack-css/src/module_asset.rs
@@ -108,7 +108,7 @@ impl Asset for ModuleCssAsset {
 /// A CSS class that is exported from a CSS module.
 ///
 /// See [`ModuleCssClasses`] for more information.
-#[turbo_tasks::value(transparent)]
+#[turbo_tasks::value]
 #[derive(Debug, Clone)]
 enum ModuleCssClass {
     Local {
diff --git a/crates/turbopack-ecmascript-plugins/src/transform/swc_ecma_transform_plugins.rs b/crates/turbopack-ecmascript-plugins/src/transform/swc_ecma_transform_plugins.rs
index d7aa68e969446..e75b328267dc0 100644
--- a/crates/turbopack-ecmascript-plugins/src/transform/swc_ecma_transform_plugins.rs
+++ b/crates/turbopack-ecmascript-plugins/src/transform/swc_ecma_transform_plugins.rs
@@ -11,13 +11,7 @@ use turbopack_ecmascript::{CustomTransformer, TransformContext};
 /// Internally this contains a `CompiledPluginModuleBytes`, which points to the
 /// compiled, serialized wasmer::Module instead of raw file bytes to reduce the
 /// cost of the compilation.
-#[turbo_tasks::value(
-    transparent,
-    serialization = "none",
-    eq = "manual",
-    into = "new",
-    cell = "new"
-)]
+#[turbo_tasks::value(serialization = "none", eq = "manual", into = "new", cell = "new")]
 pub struct SwcPluginModule(
     #[turbo_tasks(trace_ignore)]
     #[cfg(feature = "swc_ecma_transform_plugin")]
diff --git a/crates/turbopack-node/src/route_matcher.rs b/crates/turbopack-node/src/route_matcher.rs
index 18ef21acd1358..4341da5d97a17 100644
--- a/crates/turbopack-node/src/route_matcher.rs
+++ b/crates/turbopack-node/src/route_matcher.rs
@@ -1,7 +1,7 @@
 use indexmap::IndexMap;
 use turbo_tasks::Vc;
 
-#[turbo_tasks::value(transparent)]
+#[turbo_tasks::value]
 #[derive(Debug, Clone)]
 #[serde(untagged)]
 pub enum Param {
diff --git a/crates/turbopack-node/src/transforms/postcss.rs b/crates/turbopack-node/src/transforms/postcss.rs
index 05e423ebf156b..c0ea0e3c96126 100644
--- a/crates/turbopack-node/src/transforms/postcss.rs
+++ b/crates/turbopack-node/src/transforms/postcss.rs
@@ -36,7 +36,7 @@ use crate::{
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
 #[serde(rename_all = "camelCase")]
-#[turbo_tasks::value(transparent, serialization = "custom")]
+#[turbo_tasks::value(serialization = "custom")]
 struct PostCssProcessingResult {
     css: String,
     map: Option<String>,
diff --git a/crates/turbopack-node/src/transforms/webpack.rs b/crates/turbopack-node/src/transforms/webpack.rs
index d5518d606a9ae..745ca87cb0cfd 100644
--- a/crates/turbopack-node/src/transforms/webpack.rs
+++ b/crates/turbopack-node/src/transforms/webpack.rs
@@ -54,7 +54,7 @@ use crate::{
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
 #[serde(rename_all = "camelCase")]
-#[turbo_tasks::value(transparent, serialization = "custom")]
+#[turbo_tasks::value(serialization = "custom")]
 struct WebpackLoadersProcessingResult {
     source: String,
     map: Option<String>,