diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b62ac14c2..235542b9a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,8 @@
 
 - [#464](http://github.com/Nelson-numerical-software/nelson/issues/464): simplify macos build (catalina & BigSur support only).
 
+- [#499](http://github.com/Nelson-numerical-software/nelson/issues/499): rename `getContentAsUnsignedInt64Scalar` to `getContentAsUnsignedInteger64Scalar`.
+
 - [#495](http://github.com/Nelson-numerical-software/nelson/issues/495): some mtimes call failed.
 
 # 0.5.7 (2021-07-24)
diff --git a/modules/assert_functions/src/cpp/Assert_IsEqual.cpp b/modules/assert_functions/src/cpp/Assert_IsEqual.cpp
index eed8d583c8..5baf4f21aa 100644
--- a/modules/assert_functions/src/cpp/Assert_IsEqual.cpp
+++ b/modules/assert_functions/src/cpp/Assert_IsEqual.cpp
@@ -84,8 +84,8 @@ formatMessage(const ArrayOf& computedArray, const ArrayOf& expectedArray)
                         std::to_wstring(expected).c_str(), std::to_wstring(computed).c_str());
                 } break;
                 case NLS_UINT64: {
-                    uint64 computed = ArrayOf(computedArray).getContentAsUnsignedInt64Scalar();
-                    uint64 expected = ArrayOf(expectedArray).getContentAsUnsignedInt64Scalar();
+                    uint64 computed = ArrayOf(computedArray).getContentAsUnsignedInteger64Scalar();
+                    uint64 expected = ArrayOf(expectedArray).getContentAsUnsignedInteger64Scalar();
                     message = StringFormat(_W("Assertion failed: expected (%ls) and computed (%ls) "
                                               "values are different.")
                                                .c_str(),
diff --git a/modules/com_engine/src/cpp/VariantConversionHelpers.cpp b/modules/com_engine/src/cpp/VariantConversionHelpers.cpp
index 7d20418218..a26fb54310 100644
--- a/modules/com_engine/src/cpp/VariantConversionHelpers.cpp
+++ b/modules/com_engine/src/cpp/VariantConversionHelpers.cpp
@@ -494,7 +494,7 @@ NelsonToComVariant(ArrayOf A, VARIANT* variant, std::wstring& errorMessage)
             return true;
         } break;
         case NLS_UINT64: {
-            uint64 r = A.getContentAsUnsignedInt64Scalar();
+            uint64 r = A.getContentAsUnsignedInteger64Scalar();
             variant->vt = VT_UI8;
             variant->llVal = r;
             return true;
diff --git a/modules/elementary_functions/builtin/cpp/repmatBuiltin.cpp b/modules/elementary_functions/builtin/cpp/repmatBuiltin.cpp
index c0a68763d3..1d312d643a 100644
--- a/modules/elementary_functions/builtin/cpp/repmatBuiltin.cpp
+++ b/modules/elementary_functions/builtin/cpp/repmatBuiltin.cpp
@@ -64,8 +64,8 @@ Nelson::ElementaryFunctionsGateway::repmatBuiltin(
         case 2: {
             ArrayOf param2 = argIn[1];
             if (param2.isScalar()) {
-                repcount[0] = (indexType)param2.getContentAsUnsignedInt64Scalar();
-                repcount[1] = (indexType)param2.getContentAsUnsignedInt64Scalar();
+                repcount[0] = (indexType)param2.getContentAsUnsignedInteger64Scalar();
+                repcount[1] = (indexType)param2.getContentAsUnsignedInteger64Scalar();
             } else {
                 if (param2.isRowVector()) {
                     param2.promoteType(NLS_UINT64);
@@ -84,7 +84,7 @@ Nelson::ElementaryFunctionsGateway::repmatBuiltin(
         default: {
             for (size_t k = 1; k < argIn.size(); ++k) {
                 ArrayOf paramK = argIn[k];
-                repcount[k - 1] = (indexType)paramK.getContentAsUnsignedInt64Scalar();
+                repcount[k - 1] = (indexType)paramK.getContentAsUnsignedInteger64Scalar();
             }
         } break;
         }
diff --git a/modules/hdf5/src/cpp/h5Create.cpp b/modules/hdf5/src/cpp/h5Create.cpp
index a67a38d4f7..1eccce4ea4 100644
--- a/modules/hdf5/src/cpp/h5Create.cpp
+++ b/modules/hdf5/src/cpp/h5Create.cpp
@@ -93,7 +93,7 @@ setFillValue(ArrayOf fillvalue, Class dataType, hid_t dcpl)
     } break;
     case NLS_UINT64: {
         hid_t fillType = H5T_STD_U64LE;
-        uint64 value = fillvalue.getContentAsUnsignedInt64Scalar();
+        uint64 value = fillvalue.getContentAsUnsignedInteger64Scalar();
         status = H5Pset_fill_value(dcpl, fillType, &value);
     } break;
     case NLS_UINT32: {
diff --git a/modules/operators/src/cpp/Colon.cpp b/modules/operators/src/cpp/Colon.cpp
index 71e1a465eb..0b9c4789ec 100644
--- a/modules/operators/src/cpp/Colon.cpp
+++ b/modules/operators/src/cpp/Colon.cpp
@@ -456,15 +456,15 @@ Colon(const ArrayOf& J, const ArrayOf& I, const ArrayOf& K, bool& needToOverload
                 low = static_cast<uint64>(1);
                 high = static_cast<uint64>(0);
             } else {
-                step = _I.getContentAsUnsignedInt64Scalar(true);
+                step = _I.getContentAsUnsignedInteger64Scalar(true);
                 if (!_I.isScalar()) {
                     warningArrayAsScalar = true;
                 }
-                low = _J.getContentAsUnsignedInt64Scalar(true);
+                low = _J.getContentAsUnsignedInteger64Scalar(true);
                 if (!_J.isScalar()) {
                     warningArrayAsScalar = true;
                 }
-                high = _K.getContentAsUnsignedInt64Scalar(true);
+                high = _K.getContentAsUnsignedInteger64Scalar(true);
                 if (!_K.isScalar()) {
                     warningArrayAsScalar = true;
                 }
diff --git a/modules/qml_engine/src/cpp/QVariantArrayOf.cpp b/modules/qml_engine/src/cpp/QVariantArrayOf.cpp
index 900da46ffc..4684d26642 100644
--- a/modules/qml_engine/src/cpp/QVariantArrayOf.cpp
+++ b/modules/qml_engine/src/cpp/QVariantArrayOf.cpp
@@ -614,7 +614,7 @@ ArrayOfToQVariant(ArrayOf A, int id)
         res = QVariant((long long)v);
     } break;
     case QMetaType::Type::ULongLong: {
-        uint64 v = A.getContentAsUnsignedInt64Scalar();
+        uint64 v = A.getContentAsUnsignedInteger64Scalar();
         res = QVariant((unsigned long long)v);
     } break;
     case QMetaType::Type::Double: {
diff --git a/modules/stream_manager/src/cpp/FscanFunction.cpp b/modules/stream_manager/src/cpp/FscanFunction.cpp
index 107b2e8acd..915966cf97 100644
--- a/modules/stream_manager/src/cpp/FscanFunction.cpp
+++ b/modules/stream_manager/src/cpp/FscanFunction.cpp
@@ -124,7 +124,7 @@ convertToArrayOf(ArrayOfVector& values, Class classDestination, bool haveThirdAr
         switch (classDestination) {
         case NLS_UINT64: {
             for (indexType k = 0; k < nbValues; k++) {
-                ptr[k] = (T)values[k].getContentAsUnsignedInt64Scalar();
+                ptr[k] = (T)values[k].getContentAsUnsignedInteger64Scalar();
             }
         } break;
         case NLS_INT64: {
diff --git a/modules/time/builtin/cpp/calendarBuiltin.cpp b/modules/time/builtin/cpp/calendarBuiltin.cpp
index 9b98e74b35..798dd969d3 100644
--- a/modules/time/builtin/cpp/calendarBuiltin.cpp
+++ b/modules/time/builtin/cpp/calendarBuiltin.cpp
@@ -49,7 +49,7 @@ Nelson::TimeGateway::calendarBuiltin(int nLhs, const ArrayOfVector& argIn)
     } break;
     case 2: {
         ArrayOf param1 = argIn[0];
-        uint64 cyear = param1.getContentAsUnsignedInt64Scalar();
+        uint64 cyear = param1.getContentAsUnsignedInteger64Scalar();
         if (cyear < 1400 || cyear > 9999) {
             Error(ERROR_WRONG_ARGUMENT_1_VALUE);
         }
diff --git a/modules/time/builtin/cpp/tocBuiltin.cpp b/modules/time/builtin/cpp/tocBuiltin.cpp
index 8a54a72913..1e1b749aa2 100644
--- a/modules/time/builtin/cpp/tocBuiltin.cpp
+++ b/modules/time/builtin/cpp/tocBuiltin.cpp
@@ -38,7 +38,7 @@ Nelson::TimeGateway::tocBuiltin(Evaluator* eval, int nLhs, const ArrayOfVector&
     nargoutcheck(nLhs, 0, 1);
     if (argIn.size() == 1) {
         ArrayOf paramOne = argIn[0];
-        uint64 t = paramOne.getContentAsUnsignedInt64Scalar();
+        uint64 t = paramOne.getContentAsUnsignedInteger64Scalar();
         double r = 0;
         if (Toc(t, r)) {
             ArrayOfVector retval(1);
diff --git a/modules/types/src/cpp/ArrayOf_IntegersType.cpp b/modules/types/src/cpp/ArrayOf_IntegersType.cpp
index a654f3f3b9..ebcacd503f 100644
--- a/modules/types/src/cpp/ArrayOf_IntegersType.cpp
+++ b/modules/types/src/cpp/ArrayOf_IntegersType.cpp
@@ -278,7 +278,7 @@ ArrayOf::getContentAsInteger64Scalar(bool arrayAsScalar) const
 }
 //=============================================================================
 uint64
-ArrayOf::getContentAsUnsignedInt64Scalar(bool arrayAsScalar) const
+ArrayOf::getContentAsUnsignedInteger64Scalar(bool arrayAsScalar) const
 {
     return getContentAsScalar<uint64>(*this, NLS_UINT64, arrayAsScalar);
 }
diff --git a/modules/types/src/include/ArrayOf.hpp b/modules/types/src/include/ArrayOf.hpp
index 80cab1860f..15c3909b26 100644
--- a/modules/types/src/include/ArrayOf.hpp
+++ b/modules/types/src/include/ArrayOf.hpp
@@ -1081,7 +1081,7 @@ class NLSTYPES_IMPEXP ArrayOf
      * Throws an exception if we are not a scalar integer type.
      */
     uint64
-    getContentAsUnsignedInt64Scalar(bool arrayAsScalar = false) const;
+    getContentAsUnsignedInteger64Scalar(bool arrayAsScalar = false) const;
 
     /**
      * Get our contents as an integer scalar 64.
diff --git a/modules/validators/src/cpp/ValidatorsInternal.cpp b/modules/validators/src/cpp/ValidatorsInternal.cpp
index 78194533e3..cd57c3451d 100644
--- a/modules/validators/src/cpp/ValidatorsInternal.cpp
+++ b/modules/validators/src/cpp/ValidatorsInternal.cpp
@@ -557,7 +557,7 @@ createPrintableScalar(const ArrayOf& c, const std::wstring& fmt, const std::wstr
         valueAsString = std::to_wstring(value);
     } break;
     case NLS_UINT64: {
-        uint64 value = ArrayOf(c).getContentAsUnsignedInt64Scalar();
+        uint64 value = ArrayOf(c).getContentAsUnsignedInteger64Scalar();
         valueAsString = std::to_wstring(value);
     } break;
     case NLS_INT64: {
diff --git a/modules/webtools/src/cpp/WebREST.cpp b/modules/webtools/src/cpp/WebREST.cpp
index e3b12fa8ac..59cad090c9 100644
--- a/modules/webtools/src/cpp/WebREST.cpp
+++ b/modules/webtools/src/cpp/WebREST.cpp
@@ -502,7 +502,7 @@ scalarValueToString(CURL* curlObject, ArrayOf& value)
         s = std::to_string(v);
     } break;
     case NLS_UINT64: {
-        uint64 v = value.getContentAsUnsignedInt64Scalar();
+        uint64 v = value.getContentAsUnsignedInteger64Scalar();
         s = std::to_string(v);
     } break;
     case NLS_INT64: {