diff --git a/src/utils/resource_stat.py b/src/utils/resource_stat.py
index c27c22f2a..0fc9d9945 100644
--- a/src/utils/resource_stat.py
+++ b/src/utils/resource_stat.py
@@ -132,19 +132,6 @@ def __ne__(self, other):
 
 class Gpu(ResourceStat):
     def __init__(self, res=None):
-        if res is None:
-            res = {}
-        elif isinstance(res, Gpu):
-            res = res.resource
-        elif not isinstance(res, dict):
-            res = {}
-
-        # Disallow empty string for gpu type
-        res_keys = list(res.keys())
-        for k in res_keys:
-            if k == "":
-                res.pop(k)
-
         ResourceStat.__init__(self, res=res)
 
 
diff --git a/src/utils/test_resource_stat.py b/src/utils/test_resource_stat.py
index 098a9d241..68ed0315e 100644
--- a/src/utils/test_resource_stat.py
+++ b/src/utils/test_resource_stat.py
@@ -4,7 +4,7 @@
 from resource_stat import ResourceStat, Gpu, Cpu, Memory
 
 
-class TestResource(TestCase):
+class TestResourceStat(TestCase):
     def init_with_class(self):
         self.cls_name = ResourceStat
 
@@ -177,19 +177,16 @@ def test_ne(self):
         self.assertTrue(t2 != self.a)
 
 
-class TestGpu(TestResource):
+class TestGpu(TestResourceStat):
     def init_with_class(self):
         self.cls_name = Gpu
 
-    def test_empty_gpu_type(self):
-        self.assertEqual(Gpu(), Gpu({"": 1}))
 
-
-class TestCpu(TestResource):
+class TestCpu(TestResourceStat):
     def init_with_class(self):
         self.cls_name = Cpu
 
 
-class TestMemory(TestResource):
+class TestMemory(TestResourceStat):
     def init_with_class(self):
         self.cls_name = Memory