diff --git a/Package.swift b/Package.swift
index f3c04d4..1555949 100644
--- a/Package.swift
+++ b/Package.swift
@@ -25,7 +25,8 @@ let package = Package(
             dependencies: [
                 .product(name: "Swinject", package: "Swinject"),
                 .product(name: "SwinjectAutoregistration", package: "SwinjectAutoregistration"),
-            ]
+            ],
+            exclude: ["ServiceCollection/Container+ServiceCollection.erb"]
         ),
         .executableTarget(
             name: "KnitCommand",
diff --git a/Sources/KnitCodeGen/KnitDirectives.swift b/Sources/KnitCodeGen/KnitDirectives.swift
index 222fd2a..db042fd 100644
--- a/Sources/KnitCodeGen/KnitDirectives.swift
+++ b/Sources/KnitCodeGen/KnitDirectives.swift
@@ -124,7 +124,7 @@ extension KnitDirectives {
             switch self {
             case let .unexpectedToken(token):
                 return "Unexpected knit comment rule \(token)"
-            case let .duplicateSPI(name):
+            case .duplicateSPI:
                 return "Duplicate @_spi annotations are not supported"
             }
         }