diff --git a/ethers-contract/ethers-contract-abigen/src/contract/errors.rs b/ethers-contract/ethers-contract-abigen/src/contract/errors.rs
index fa3384d2..e8c3d3fb 100644
--- a/ethers-contract/ethers-contract-abigen/src/contract/errors.rs
+++ b/ethers-contract/ethers-contract-abigen/src/contract/errors.rs
@@ -60,10 +60,10 @@ impl Context {
         };
 
         let doc = format!(
-            "Custom Error type `{}` with signature `{}` and selector `{:?}`",
+            "Custom Error type `{}` with signature `{}` and selector `0x{}`",
             error.name,
             abi_signature,
-            error.selector()
+            hex::encode(&error.selector()[..])
         );
         let abi_signature_doc = util::expand_doc(&doc);
         let ethers_contract = ethers_contract_crate();
diff --git a/ethers-contract/ethers-contract-abigen/src/contract/methods.rs b/ethers-contract/ethers-contract-abigen/src/contract/methods.rs
index 57e16d19..6fc6bb56 100644
--- a/ethers-contract/ethers-contract-abigen/src/contract/methods.rs
+++ b/ethers-contract/ethers-contract-abigen/src/contract/methods.rs
@@ -125,10 +125,10 @@ impl Context {
         let function_name = &function.name;
         let abi_signature = function.abi_signature();
         let doc = format!(
-            "Container type for all input parameters for the `{}` function with signature `{}` and selector `{:?}`",
+            "Container type for all input parameters for the `{}` function with signature `{}` and selector `0x{}`",
             function.name,
             abi_signature,
-            function.selector()
+            hex::encode(&function.selector()[..])
         );
         let abi_signature_doc = util::expand_doc(&doc);
         let ethers_contract = ethers_contract_crate();
@@ -177,10 +177,10 @@ impl Context {
         };
         let abi_signature = function.abi_signature();
         let doc = format!(
-            "Container type for all return fields from the `{}` function with signature `{}` and selector `{:?}`",
+            "Container type for all return fields from the `{}` function with signature `{}` and selector `0x{}`",
             function.name,
             abi_signature,
-            function.selector()
+            hex::encode(&function.selector()[..])
         );
         let abi_signature_doc = util::expand_doc(&doc);
         let ethers_contract = ethers_contract_crate();