diff --git a/README.md b/README.md
index 12192102c..b377ee129 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ let template = liquid::ParserBuilder::with_stdlib()
     .build().unwrap()
     .parse("Liquid! {{num | minus: 2}}").unwrap();
 
-let mut globals = liquid::object!({
+let globals = liquid::object!({
     "num": 4f64
 });
 
diff --git a/src/lib.rs b/src/lib.rs
index 710a0449a..0164a16da 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,7 +12,7 @@
 //!     .build().unwrap()
 //!     .parse("Liquid! {{num | minus: 2}}").unwrap();
 //!
-//! let mut globals = liquid::object!({
+//! let globals = liquid::object!({
 //!     "num": 4f64
 //! });
 //!
diff --git a/src/partials.rs b/src/partials.rs
index 8b40a37a5..228676271 100644
--- a/src/partials.rs
+++ b/src/partials.rs
@@ -32,7 +32,7 @@
 //! // Compile and render the main template, which uses the "common" partial.
 //! let parser = ParserBuilder::with_stdlib().partials(partials).build().unwrap();
 //! let rendered = {
-//!     let mut globals = liquid::object!({ "num": 42 });
+//!     let globals = liquid::object!({ "num": 42 });
 //!     parser
 //!         .parse("Liquid! {% render \"common\", i: num %}").unwrap()
 //!         .render(&globals).unwrap()