diff --git a/src/cmd/go/internal/cfg/cfg.go b/src/cmd/go/internal/cfg/cfg.go
index b47eb812b5..21a56d6df6 100644
--- a/src/cmd/go/internal/cfg/cfg.go
+++ b/src/cmd/go/internal/cfg/cfg.go
@@ -58,6 +58,10 @@ var (
 
 func defaultContext() build.Context {
 	ctxt := build.Default
+
+	// TODO(b/187972950): remove this tag before merging to master.
+	ctxt.BuildTags = []string{"gofuzzbeta"}
+
 	ctxt.JoinPath = filepath.Join // back door to say "do not use go command"
 
 	ctxt.GOROOT = findGOROOT()
diff --git a/src/cmd/go/testdata/script/test_fuzz_tag.txt b/src/cmd/go/testdata/script/test_fuzz_tag.txt
new file mode 100644
index 0000000000..07ed5d6d61
--- /dev/null
+++ b/src/cmd/go/testdata/script/test_fuzz_tag.txt
@@ -0,0 +1,31 @@
+# Check that the gofuzzbeta tag is enabled by default and can be disabled.
+# TODO(jayconrod,katiehockman): before merging to master, restore the old
+# default and delete this test.
+
+[short] skip
+
+go test -list=.
+stdout Test
+stdout Fuzz
+
+go test -tags=
+
+-- go.mod --
+module fuzz
+
+go 1.17
+-- fuzz_test.go --
+// +build gofuzzbeta
+
+package fuzz
+
+import "testing"
+
+func Fuzz(f *testing.F) {
+	f.Add([]byte(nil))
+	f.Fuzz(func(*testing.T, []byte) {})
+}
+
+func Test(*testing.T) {}
+-- empty_test.go --
+package fuzz