diff --git a/src/ffi/credential.rs b/src/ffi/credential.rs
index aaf33c2b..2aad9be6 100644
--- a/src/ffi/credential.rs
+++ b/src/ffi/credential.rs
@@ -529,14 +529,12 @@ pub extern "C" fn anoncreds_w3c_credential_get_attribute(
                 .revocation_registry
                 .as_ref()
                 .map_or(ptr::null_mut(), |s| rust_string_to_c(s.to_string())),
-            "rev_reg_index" => {
-                cred
-                    .get_credential_signature_proof()?
-                    .get_credential_signature()?
-                    .signature
-                    .extract_index()
-                    .map_or(ptr::null_mut(), |s| rust_string_to_c(s.to_string()))
-            },
+            "rev_reg_index" => cred
+                .get_credential_signature_proof()?
+                .get_credential_signature()?
+                .signature
+                .extract_index()
+                .map_or(ptr::null_mut(), |s| rust_string_to_c(s.to_string())),
             s => return Err(err_msg!("Unsupported attribute: {}", s)),
         };
         unsafe { *result_p = val };