diff --git a/go/internal/gcimporter/iexport_go118_test.go b/go/internal/gcimporter/iexport_go118_test.go
index 17107530a1..3c9610ea75 100644
--- a/go/internal/gcimporter/iexport_go118_test.go
+++ b/go/internal/gcimporter/iexport_go118_test.go
@@ -76,6 +76,10 @@ func TestImportTypeparamTests(t *testing.T) {
 		t.Fatal(err)
 	}
 
+	if isUnifiedBuilder() {
+		t.Skip("unified export data format is currently unsupported")
+	}
+
 	for _, entry := range list {
 		if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".go") {
 			// For now, only consider standalone go files.
diff --git a/go/internal/gcimporter/iexport_test.go b/go/internal/gcimporter/iexport_test.go
index e1e9d7fc61..084679bbd4 100644
--- a/go/internal/gcimporter/iexport_test.go
+++ b/go/internal/gcimporter/iexport_test.go
@@ -63,6 +63,12 @@ func iexport(fset *token.FileSet, pkg *types.Package) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
+// isUnifiedBuilder reports whether we are executing on a go builder that uses
+// unified export data.
+func isUnifiedBuilder() bool {
+	return os.Getenv("GO_BUILDER_NAME") == "linux-amd64-unified"
+}
+
 func TestIExportData_stdlib(t *testing.T) {
 	if runtime.Compiler == "gccgo" {
 		t.Skip("gccgo standard library is inaccessible")
@@ -88,7 +94,7 @@ func TestIExportData_stdlib(t *testing.T) {
 	// TryBots.
 	//
 	// TODO(#48595): fix this test with GOEXPERIMENT=unified.
-	isUnified := os.Getenv("GO_BUILDER_NAME") == "linux-amd64-unified"
+	isUnified := isUnifiedBuilder()
 	for _, path := range buildutil.AllPackages(conf.Build) {
 		if !(isUnified && testenv.UsesGenerics(path)) {
 			conf.Import(path)