diff --git a/tm2/pkg/amino/typeinfo_test.go b/tm2/pkg/amino/typeinfo_test.go
new file mode 100644
index 00000000000..b685c624557
--- /dev/null
+++ b/tm2/pkg/amino/typeinfo_test.go
@@ -0,0 +1,14 @@
+package amino
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestTypeInfoString(t *testing.T) {
+	type T struct {
+		T *T
+	}
+	typeInfo := gcdc.newTypeInfoUnregisteredWLocked(reflect.TypeOf(T{}))
+	_ = typeInfo.String()
+}