diff --git a/src/cmd/go/build.go b/src/cmd/go/build.go
index f656d70872..4344d84702 100644
--- a/src/cmd/go/build.go
+++ b/src/cmd/go/build.go
@@ -413,7 +413,8 @@ func buildModeInit() {
 		} else {
 			switch platform {
 			case "linux/amd64", "linux/arm", "linux/arm64", "linux/386",
-				"android/amd64", "android/arm", "android/arm64", "android/386":
+				"android/amd64", "android/arm", "android/arm64", "android/386",
+				"darwin/amd64":
 			default:
 				fatalf("-buildmode=plugin not supported on %s\n", platform)
 			}