diff --git a/bindings/pyroot/cppyy/CPyCppyy/src/TemplateProxy.cxx b/bindings/pyroot/cppyy/CPyCppyy/src/TemplateProxy.cxx
index 9a9664c0d9a23..207cec90dbd0e 100644
--- a/bindings/pyroot/cppyy/CPyCppyy/src/TemplateProxy.cxx
+++ b/bindings/pyroot/cppyy/CPyCppyy/src/TemplateProxy.cxx
@@ -231,9 +231,7 @@ PyObject* TemplateProxy::Instantiate(const std::string& fname,
         if (pyol && !bIsCppOL && !TemplateProxy_Check(pyol)) {
         // unknown object ... leave well alone
             Py_DECREF(pyol);
-            Py_DECREF(pycachename);
-            Py_DECREF(dct);
-            return nullptr;
+            pyol = nullptr;
         }
 
     // find the full name if the requested one was partial
diff --git a/bindings/pyroot/cppyy/cppyy/test/test_templates.py b/bindings/pyroot/cppyy/cppyy/test/test_templates.py
index 7c2ea9bdfb53a..16d356d895320 100644
--- a/bindings/pyroot/cppyy/cppyy/test/test_templates.py
+++ b/bindings/pyroot/cppyy/cppyy/test/test_templates.py
@@ -1206,6 +1206,27 @@ def test36_constructor_implicit_conversion(self):
 
         a = ns.S(1, 2)
         assert a.m_a == 1
+        
+    def test37_deleted_alias_of_template_proxy(self):
+        """Alias TemplateProxy and set None to orginal"""
+        import cppyy
+        
+        cppyy.cppdef(r"""
+            struct PyA {
+                template <typename T>
+                T get() { return (T)-1; }
+            };
+        """)
+        
+        PyA = cppyy.gbl.PyA
+        PyA.getter = PyA.get
+        
+        assert PyA().get["int"]() == -1
+        assert PyA().getter["int"]() == -1
+        
+        PyA.get = None
+        
+        assert PyA().getter["float"]() == -1.0
 
 
 class TestTEMPLATED_TYPEDEFS: