diff --git a/test/test_addition.c b/test/test_addition.c
index de01d4f..51a9c46 100644
--- a/test/test_addition.c
+++ b/test/test_addition.c
@@ -34,4 +34,22 @@ void test_addition_full_adder_nullplusnullgleichnullmituebertrag(void)
     TEST_ASSERT_EQUAL_INT(expected, result[0]);
 }
 
+void test_addition_full_adder_zahlpluszahlgleichsummeohneuebertrag(void)
+{
+    int result[5];
+    int expected[5] = { 0, 1, 1, 1, 1};
+
+    full_adder((result+0), nullcarry, 1, 0, 1);
+    full_adder((result+1), nullcarry, 0, 1, 0);
+    full_adder((result+2), nullcarry, 1, 0, 0);
+    full_adder((result+3), nullcarry, 0, 0, 1);
+    full_adder((result+4), nullcarry, 1, 1, 1);
+
+    TEST_ASSERT_EQUAL_INT(expected[0], result[0]);
+    TEST_ASSERT_EQUAL_INT(expected[1], result[1]);
+    TEST_ASSERT_EQUAL_INT(expected[2], result[2]);
+    TEST_ASSERT_EQUAL_INT(expected[3], result[3]);
+    TEST_ASSERT_EQUAL_INT(expected[4], result[4]);
+}
+
 #endif // TEST