diff --git a/zcash_client_backend/build.rs b/zcash_client_backend/build.rs
index 335848d44..ae7db927f 100644
--- a/zcash_client_backend/build.rs
+++ b/zcash_client_backend/build.rs
@@ -38,45 +38,43 @@ fn build() -> io::Result<()> {
         "src/proto/compact_formats.rs",
     )?;
 
-    {
-        // Build the gRPC types and client.
-        tonic_build::configure()
-            .build_server(false)
-            .client_mod_attribute(
-                "cash.z.wallet.sdk.rpc",
-                r#"#[cfg(feature = "lightwalletd-tonic")]"#,
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.ChainMetadata",
-                "crate::proto::compact_formats::ChainMetadata",
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.CompactBlock",
-                "crate::proto::compact_formats::CompactBlock",
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.CompactTx",
-                "crate::proto::compact_formats::CompactTx",
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.CompactSaplingSpend",
-                "crate::proto::compact_formats::CompactSaplingSpend",
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.CompactSaplingOutput",
-                "crate::proto::compact_formats::CompactSaplingOutput",
-            )
-            .extern_path(
-                ".cash.z.wallet.sdk.rpc.CompactOrchardAction",
-                "crate::proto::compact_formats::CompactOrchardAction",
-            )
-            .compile(&[SERVICE_PROTO], &["proto/"])?;
+    // Build the gRPC types and client.
+    tonic_build::configure()
+        .build_server(false)
+        .client_mod_attribute(
+            "cash.z.wallet.sdk.rpc",
+            r#"#[cfg(feature = "lightwalletd-tonic")]"#,
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.ChainMetadata",
+            "crate::proto::compact_formats::ChainMetadata",
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.CompactBlock",
+            "crate::proto::compact_formats::CompactBlock",
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.CompactTx",
+            "crate::proto::compact_formats::CompactTx",
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.CompactSaplingSpend",
+            "crate::proto::compact_formats::CompactSaplingSpend",
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.CompactSaplingOutput",
+            "crate::proto::compact_formats::CompactSaplingOutput",
+        )
+        .extern_path(
+            ".cash.z.wallet.sdk.rpc.CompactOrchardAction",
+            "crate::proto::compact_formats::CompactOrchardAction",
+        )
+        .compile(&[SERVICE_PROTO], &["proto/"])?;
 
-        // Copy the generated types into the source tree so changes can be committed. The
-        // file has the same name as for the compact format types because they have the
-        // same package, but we've set things up so this only contains the service types.
-        fs::copy(out.join("cash.z.wallet.sdk.rpc.rs"), "src/proto/service.rs")?;
-    }
+    // Copy the generated types into the source tree so changes can be committed. The
+    // file has the same name as for the compact format types because they have the
+    // same package, but we've set things up so this only contains the service types.
+    fs::copy(out.join("cash.z.wallet.sdk.rpc.rs"), "src/proto/service.rs")?;
 
     Ok(())
 }