diff --git a/tests/senml_cbor/main.c b/tests/senml_cbor/main.c
index 0d7f5203a0..2486fd0031 100644
--- a/tests/senml_cbor/main.c
+++ b/tests/senml_cbor/main.c
@@ -104,7 +104,7 @@ void test_senml_encode(void)
     fmt_bytes_hex(result, cbor_buf, len);
 
     /* Compare hex result */
-    TEST_ASSERT_EQUAL_INT(2 * len, sizeof expect - 1);
+    TEST_ASSERT_EQUAL_INT(2 * len, sizeof(expect) - 1);
     TEST_ASSERT_EQUAL_INT(0, strncmp(expect, result, len));
 }
 
diff --git a/tests/senml_saul/Makefile b/tests/senml_saul/Makefile
index a69acec8c5..3595a6af76 100644
--- a/tests/senml_saul/Makefile
+++ b/tests/senml_saul/Makefile
@@ -1,6 +1,5 @@
 include ../Makefile.tests_common
 
-USEMODULE += saul_default
 USEMODULE += senml_saul
 USEMODULE += fmt
 USEMODULE += embunit
diff --git a/tests/senml_saul/main.c b/tests/senml_saul/main.c
index 002f7bcde2..6e493079d0 100644
--- a/tests/senml_saul/main.c
+++ b/tests/senml_saul/main.c
@@ -39,7 +39,7 @@ void test_senml_encode(void)
     fmt_bytes_hex(result, cbor_buf, len);
 
     /* Compare hex result */
-    TEST_ASSERT_EQUAL_INT(2 * len, sizeof expect - 1);
+    TEST_ASSERT_EQUAL_INT(2 * len, sizeof(expect) - 1);
     TEST_ASSERT_EQUAL_INT(0, strncmp(expect, result, len));
 }