diff --git a/tests/unittests/tests-ipv6_addr/tests-ipv6_addr.c b/tests/unittests/tests-ipv6_addr/tests-ipv6_addr.c
index 1aabb4afc453ad9c136f8b435c6344e8c89e7f07..f00e6f24b9ebe7475b1c5deab71662209627b048 100644
--- a/tests/unittests/tests-ipv6_addr/tests-ipv6_addr.c
+++ b/tests/unittests/tests-ipv6_addr/tests-ipv6_addr.c
@@ -404,16 +404,16 @@ static void test_ipv6_addr_match_prefix_same_pointer(void)
 static void test_ipv6_addr_init_prefix(void)
 {
     ng_ipv6_addr_t a = { {
-            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+            0x00, 0x01, 0x02, 0x02, 0x04, 0x05, 0x06, 0x07,
             0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
         }
     };
     ng_ipv6_addr_t b = { {
-            0x00, 0x01, 0x02, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+            0x00, 0x01, 0x02, 0x03, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
         }
     };
     ng_ipv6_addr_t c =  { {
-            0xff, 0xfe, 0xfd, 0xfd, 0x04, 0x05, 0x06, 0x07,
+            0xff, 0xfe, 0xfd, 0xfe, 0x04, 0x05, 0x06, 0x07,
             0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
         }
     };