diff --git a/.build_number b/.build_number
index 7b222bc4f..6afcd4b0c 100644
--- a/.build_number
+++ b/.build_number
@@ -1 +1 @@
-1593
+1594
diff --git a/src/libtriton/bindings/python/objects/pyTritonContext.cpp b/src/libtriton/bindings/python/objects/pyTritonContext.cpp
index f6dbf2c0d..ea7c42d55 100644
--- a/src/libtriton/bindings/python/objects/pyTritonContext.cpp
+++ b/src/libtriton/bindings/python/objects/pyTritonContext.cpp
@@ -503,10 +503,12 @@ namespace triton {
         if (PyMethod_Check(function)) {
           cb_self = PyMethod_GET_SELF(function);
           cb = PyMethod_GET_FUNCTION(function);
+          Py_INCREF(cb_self);
         }
         else {
           cb = function;
         }
+        Py_INCREF(cb);
 
         try {
           switch (static_cast<triton::callbacks::callback_e>(PyLong_AsUint32(mode))) {
@@ -2624,6 +2626,11 @@ namespace triton {
           return PyErr_Format(PyExc_TypeError, "%s", e.what());
         }
 
+        Py_DECREF(cb);
+        if (cb_self != nullptr) {
+          Py_DECREF(cb_self);
+        }
+
         Py_INCREF(Py_None);
         return Py_None;
       }
diff --git a/src/testers/unittests/test_github_issues.py b/src/testers/unittests/test_github_issues.py
index ac742298c..c5f40dcd3 100644
--- a/src/testers/unittests/test_github_issues.py
+++ b/src/testers/unittests/test_github_issues.py
@@ -649,6 +649,7 @@ def test_2(self):
         x0 = self.ctx.getConcreteRegisterValue(self.ctx.registers.x0)
         self.assertEqual(x0, 0x55667788)
 
+
 class TestIssue1310(unittest.TestCase):
     """Testing #1310."""
 
@@ -700,3 +701,16 @@ def test_2(self):
 
             self.assertEqual(ctx.getConcreteRegisterValue(ctx.registers.tpidr_el0), 0x1122334455667788)
             self.assertEqual(ctx.getConcreteRegisterValue(ctx.registers.x20), 0x1122334455667788)
+
+
+class TestIssue1035(unittest.TestCase):
+    def setup_callback(self, ctx):
+        def getMem(triton_ctx, memacc):
+            self.x = 1234
+        ctx.addCallback(CALLBACK.GET_CONCRETE_MEMORY_VALUE, getMem)
+
+    def test_1(self):
+        ctx = TritonContext(ARCH.X86_64)
+        self.setup_callback(ctx)
+        ctx.getConcreteMemoryAreaValue(0x1000, 0x1)
+        self.assertEqual(self.x, 1234)