diff --git a/Framework/PythonInterface/mantid/kernel/src/Registry/PropertyWithValueFactory.cpp b/Framework/PythonInterface/mantid/kernel/src/Registry/PropertyWithValueFactory.cpp
index 8c3e6b1ff171..9b73d546c9c6 100644
--- a/Framework/PythonInterface/mantid/kernel/src/Registry/PropertyWithValueFactory.cpp
+++ b/Framework/PythonInterface/mantid/kernel/src/Registry/PropertyWithValueFactory.cpp
@@ -87,8 +87,8 @@ void initArrayLookup(PyArrayIndex &index) {
   using StringArrayHandler = SequenceTypeHandler<std::vector<std::string>>;
   index.emplace("StringArray", std::make_shared<StringArrayHandler>());
 
-  using LongIntArrayHandler = SequenceTypeHandler<std::vector<long>>;
-  index.emplace("LongIntArray", std::make_shared<LongIntArrayHandler>());
+  using IntArrayHandler = SequenceTypeHandler<std::vector<int>>;
+  index.emplace("IntArray", std::make_shared<IntArrayHandler>());
 }
 
 /**
@@ -220,7 +220,7 @@ const std::string PropertyWithValueFactory::isArray(PyObject *const object) {
       throw std::runtime_error("Unable to support extracting arrays of booleans.");
     }
     if (PyLong_Check(item)) {
-      return std::string("LongIntArray");
+      return std::string("IntArray");
     }
     GNU_DIAG_ON("parentheses-equality")
     if (PyFloat_Check(item)) {
diff --git a/Framework/PythonInterface/test/cpp/PropertyWithValueFactoryTest.h b/Framework/PythonInterface/test/cpp/PropertyWithValueFactoryTest.h
index bac36e1742b8..0a7af2552bf0 100644
--- a/Framework/PythonInterface/test/cpp/PropertyWithValueFactoryTest.h
+++ b/Framework/PythonInterface/test/cpp/PropertyWithValueFactoryTest.h
@@ -65,11 +65,11 @@ class PropertyWithValueFactoryTest : public CxxTest::TestSuite {
   }
 
   void test_builtin_type_create_long_array_from_list_type_property() {
-    testCreateArrayProperty<long>(Py_BuildValue("[NN]", PyLong_FromLong(-10), PyLong_FromLong(4)));
+    testCreateArrayProperty<int>(Py_BuildValue("[NN]", PyLong_FromLong(-10), PyLong_FromLong(4)));
   }
 
   void test_builtin_type_create_int_array_from_list_type_property() {
-    testCreateArrayProperty<long>(Py_BuildValue("[ii]", -10, 4));
+    testCreateArrayProperty<int>(Py_BuildValue("[ii]", -10, 4));
   }
 
 private: