diff --git a/docs/advanced-features/compiler.md b/docs/advanced-features/compiler.md
index 43022a63fd506..f57b539a59e29 100644
--- a/docs/advanced-features/compiler.md
+++ b/docs/advanced-features/compiler.md
@@ -55,7 +55,7 @@ module.exports = {
       topLevelImportPaths?: string[],
       // Defaults to ["index"].
       meaninglessFileNames?: string[],
-      // Disabled by default.
+      // Enabled by default.
       cssProp?: boolean,
       // Empty by default.
       namespace?: string,
diff --git a/packages/next-swc/crates/styled_components/src/lib.rs b/packages/next-swc/crates/styled_components/src/lib.rs
index 14c0890351bc4..88a1fc6d20de7 100644
--- a/packages/next-swc/crates/styled_components/src/lib.rs
+++ b/packages/next-swc/crates/styled_components/src/lib.rs
@@ -46,7 +46,7 @@ pub struct Config {
     #[serde(default)]
     pub pure: bool,
 
-    #[serde(default)]
+    #[serde(default = "true_by_default")]
     pub css_prop: bool,
 }
 
diff --git a/test/development/basic/styled-components/next.config.js b/test/development/basic/styled-components/next.config.js
index 1b9e5702bf862..91f693fda5258 100644
--- a/test/development/basic/styled-components/next.config.js
+++ b/test/development/basic/styled-components/next.config.js
@@ -1,7 +1,5 @@
 module.exports = {
   compiler: {
-    styledComponents: {
-      cssProp: true,
-    },
+    styledComponents: true,
   },
 }