diff --git a/tests/unit/util/main.c b/tests/unit/util/main.c
index 161c245f2b9..e01c7dce286 100644
--- a/tests/unit/util/main.c
+++ b/tests/unit/util/main.c
@@ -396,6 +396,11 @@ ZTEST(util, test_IS_EQ) {
 	zassert_true(IS_EQ(0, 0), "Unexpected IS_EQ result");
 	zassert_true(IS_EQ(1, 1), "Unexpected IS_EQ result");
 	zassert_true(IS_EQ(7, 7), "Unexpected IS_EQ result");
+	zassert_true(IS_EQ(0U, 0U), "Unexpected IS_EQ result");
+	zassert_true(IS_EQ(1U, 1U), "Unexpected IS_EQ result");
+	zassert_true(IS_EQ(7U, 7U), "Unexpected IS_EQ result");
+	zassert_true(IS_EQ(1, 1U), "Unexpected IS_EQ result");
+	zassert_true(IS_EQ(1U, 1), "Unexpected IS_EQ result");
 
 	zassert_false(IS_EQ(0, 1), "Unexpected IS_EQ result");
 	zassert_false(IS_EQ(1, 7), "Unexpected IS_EQ result");