diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index ed48e64..79f88ac 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -712,13 +712,13 @@
 Base test mbedtls_mpi_add_abs #4
 mbedtls_mpi_add_abs:10:"-12345678":10:"-642531":10:"12988209"
 
-Test mbedtls_mpi_add_abs: 0 + 0
+Test mbedtls_mpi_add_abs: 0 (null) + 0 (null)
 mbedtls_mpi_add_abs:16:"":16:"":16:"0"
 
-Test mbedtls_mpi_add_abs: 0 + 1
+Test mbedtls_mpi_add_abs: 0 (null) + 1
 mbedtls_mpi_add_abs:16:"":16:"01":16:"01"
 
-Test mbedtls_mpi_add_abs: 1 + 0
+Test mbedtls_mpi_add_abs: 1 + 0 (null)
 mbedtls_mpi_add_abs:16:"01":16:"":16:"01"
 
 Test mbedtls_mpi_add_abs #1
@@ -742,19 +742,19 @@
 Base test mbedtls_mpi_add_mpi #4
 mbedtls_mpi_add_mpi:10:"-12345678":10:"-642531":10:"-12988209"
 
-Test mbedtls_mpi_add_mpi: 0 + 0
+Test mbedtls_mpi_add_mpi: 0 (null) + 0 (null)
 mbedtls_mpi_add_mpi:16:"":16:"":16:"0"
 
-Test mbedtls_mpi_add_mpi: 0 + 1
+Test mbedtls_mpi_add_mpi: 0 (null) + 1
 mbedtls_mpi_add_mpi:16:"":16:"01":16:"01"
 
-Test mbedtls_mpi_add_mpi: 1 + 0
+Test mbedtls_mpi_add_mpi: 1 + 0 (null)
 mbedtls_mpi_add_mpi:16:"01":16:"":16:"01"
 
-Test mbedtls_mpi_add_mpi: 0 + -1
+Test mbedtls_mpi_add_mpi: 0 (null) + -1
 mbedtls_mpi_add_mpi:16:"":16:"-01":16:"-01"
 
-Test mbedtls_mpi_add_mpi: -1 + 0
+Test mbedtls_mpi_add_mpi: -1 + 0 (null)
 mbedtls_mpi_add_mpi:16:"-01":16:"":16:"-01"
 
 Test mbedtls_mpi_add_mpi #1