diff --git a/Sources/SwiftDriver/Toolchains/WebAssemblyToolchain.swift b/Sources/SwiftDriver/Toolchains/WebAssemblyToolchain.swift
index 662faf574..25cdb90c0 100644
--- a/Sources/SwiftDriver/Toolchains/WebAssemblyToolchain.swift
+++ b/Sources/SwiftDriver/Toolchains/WebAssemblyToolchain.swift
@@ -95,10 +95,7 @@ public final class WebAssemblyToolchain: Toolchain {
     switch tool {
     case .swiftCompiler:
       return try lookup(executable: "swift-frontend")
-    case .staticLinker(nil):
-      return try lookup(executable: "ar")
-    case .staticLinker(.llvmFull),
-         .staticLinker(.llvmThin):
+    case .staticLinker:
       return try lookup(executable: "llvm-ar")
     case .dynamicLinker:
       // FIXME: This needs to look in the tools_directory first.