diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ea21d8c..87f55f4b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,6 +44,7 @@ Enhancements
 * `SmartString` now uses `LazyCompact` instead of `Compact` to minimize allocations.
 * Added `pop` for strings.
 * Added `ImmutableString::ptr_eq` to test if two strings point to the same allocation.
+* The `serde` feature of `SmartString` is turned on under `metadata` to make `Map` serializable.
 
 ### `Scope` API
 
diff --git a/Cargo.toml b/Cargo.toml
index ef48ed62..52e61ab6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,7 @@ no_closure = []                 # no automatic sharing and capture of anonymous
 no_module = []                  # no modules
 internals = []                  # expose internal data structures
 unicode-xid-ident = ["unicode-xid"] # allow Unicode Standard Annex #31 for identifiers.
-metadata = ["serde", "serde_json", "rhai_codegen/metadata"] # enable exporting functions metadata
+metadata = ["serde", "serde_json", "rhai_codegen/metadata", "smartstring/serde"] # enable exporting functions metadata
 
 no_std = ["no-std-compat", "num-traits/libm", "core-error", "libm", "ahash/compile-time-rng"]
 
diff --git a/README.md b/README.md
index e11cf72f..7aa96bfb 100644
--- a/README.md
+++ b/README.md
@@ -79,8 +79,8 @@ The [`scripts`](https://github.com/rhaiscript/rhai/tree/master/scripts) subdirec
 Below is the standard _Fibonacci_ example for scripting languages:
 
 ```js
-// This Rhai script calculates the n-th Fibonacci number using a really dumb algorithm
-// to test the speed of the scripting engine.
+// This Rhai script calculates the n-th Fibonacci number using a
+// really dumb algorithm to test the speed of the scripting engine.
 
 const TARGET = 28;
 const REPEAT = 5;