diff --git a/pbjson-build/src/generator/enumeration.rs b/pbjson-build/src/generator/enumeration.rs
index 3bae939..8951d32 100644
--- a/pbjson-build/src/generator/enumeration.rs
+++ b/pbjson-build/src/generator/enumeration.rs
@@ -125,7 +125,7 @@ fn write_visitor<W: Write>(
 {indent}    type Value = {rust_type};
 
 {indent}    fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {{
-{indent}        write!(formatter, "expected one of: {{:?}}", &FIELDS)
+{indent}        write!(formatter, "expected one of: {{:?}}", FIELDS)
 {indent}    }}
 
 {indent}    fn visit_i64<E>(self, v: i64) -> std::result::Result<Self::Value, E>
diff --git a/pbjson-build/src/generator/message.rs b/pbjson-build/src/generator/message.rs
index 0ecaa8d..01be603 100644
--- a/pbjson-build/src/generator/message.rs
+++ b/pbjson-build/src/generator/message.rs
@@ -710,7 +710,7 @@ fn write_deserialize_field_name<W: Write>(
 {indent}            type Value = GeneratedField;
 
 {indent}            fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {{
-{indent}                write!(formatter, "expected one of: {{:?}}", &FIELDS)
+{indent}                write!(formatter, "expected one of: {{:?}}", FIELDS)
 {indent}            }}
 
 {indent}            #[allow(unused_variables)]