diff --git a/swift/internal/xcode_swift_toolchain.bzl b/swift/internal/xcode_swift_toolchain.bzl
index 8cd32ab1c..32fa33798 100644
--- a/swift/internal/xcode_swift_toolchain.bzl
+++ b/swift/internal/xcode_swift_toolchain.bzl
@@ -515,7 +515,7 @@ def _swift_apple_target_triple(cpu, platform, version):
         environment = "-simulator"
 
     return "{cpu}-apple-{platform}{version}{environment}".format(
-        cpu = cpu,
+        cpu = cpu.replace("sim_", ""),
         environment = environment,
         platform = platform_string,
         version = version,