diff --git a/crates/ink/src/chain_extension.rs b/crates/ink/src/chain_extension.rs
index ba853ac997..a4d615b7b9 100644
--- a/crates/ink/src/chain_extension.rs
+++ b/crates/ink/src/chain_extension.rs
@@ -151,7 +151,7 @@ macro_rules! combine_extensions {
         }
 
         const _: () = {
-            /// Each chain extension has an abstract type $name that describes
+            /// Each chain extension has an abstract type `$name` that describes
             /// it and the actual instance that provides access to methods.
             /// This structure is an instance that is returned by the `self.env().extension()` call.
             ///
@@ -172,4 +172,4 @@ macro_rules! combine_extensions {
             }
         };
     }
-}
\ No newline at end of file
+}
diff --git a/integration-tests/combined-extension/lib.rs b/integration-tests/combined-extension/lib.rs
index 75d4263c29..7682477135 100755
--- a/integration-tests/combined-extension/lib.rs
+++ b/integration-tests/combined-extension/lib.rs
@@ -1,10 +1,8 @@
 #![cfg_attr(not(feature = "std"), no_std, no_main)]
 
-use ink::{
-    env::{
-        DefaultEnvironment,
-        Environment,
-    },
+use ink::env::{
+    DefaultEnvironment,
+    Environment,
 };
 use psp22_extension::Psp22Extension;
 use rand_extension::{