diff --git a/Tests/Utils/swap_endian_le.cpp b/Tests/Utils/swap_endian_le.cpp
new file mode 100644
index 0000000..c84d0a9
--- /dev/null
+++ b/Tests/Utils/swap_endian_le.cpp
@@ -0,0 +1,38 @@
+/*
+ *   Copyright (c) 2022 by Geoffrey Merck F4FXL / KC3FRA
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <gtest/gtest.h>
+
+#include "Utils.h"
+#include "StringUtils.h"
+#include "Log.h"
+
+class Utils_swap_endian_le : public ::testing::Test {
+ 
+};
+
+// This test will fail on big endian systems....
+TEST_F(Utils_swap_endian_le, SwapUINT32_be) {
+    uint32_t test = 0x12345678U;
+
+    uint32_t res = CUtils::swap_endian_le(test);
+
+    EXPECT_EQ(res, 0x78563412U);
+}
+
+