diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index b004c95..89c84e8 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -302,6 +302,12 @@
                                                         valid_mode,
                                                         0, sizeof( buf ), buf,
                                                         NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_rsassa_pkcs1_v15_sign( &ctx, NULL, NULL,
+                                                        valid_mode,
+                                                        MBEDTLS_MD_SHA1,
+                                                        0, NULL,
+                                                        buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_rsassa_pss_sign( NULL, NULL, NULL,
@@ -323,6 +329,12 @@
                                                          valid_mode,
                                                          0, sizeof( buf ), buf,
                                                          NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_rsassa_pss_sign( &ctx, NULL, NULL,
+                                                         valid_mode,
+                                                         MBEDTLS_MD_SHA1,
+                                                         0, NULL,
+                                                         buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_pkcs1_verify( NULL, NULL, NULL,
@@ -344,6 +356,11 @@
                                                       valid_mode,
                                                       0, sizeof( buf ), buf,
                                                       NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_pkcs1_verify( &ctx, NULL, NULL,
+                                                      valid_mode,
+                                                      MBEDTLS_MD_SHA1, 0, NULL,
+                                                      buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_rsassa_pkcs1_v15_verify( NULL, NULL,
@@ -369,6 +386,13 @@
                                                           valid_mode,
                                                           0, sizeof( buf ), buf,
                                                           NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_rsassa_pkcs1_v15_verify( &ctx, NULL,
+                                                          NULL,
+                                                          valid_mode,
+                                                          MBEDTLS_MD_SHA1,
+                                                          0, NULL,
+                                                          buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_rsassa_pss_verify( NULL, NULL, NULL,
@@ -390,6 +414,12 @@
                                                            valid_mode,
                                                            0, sizeof( buf ),
                                                            buf, NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL, NULL,
+                                                           valid_mode,
+                                                           MBEDTLS_MD_SHA1,
+                                                           0, NULL,
+                                                           buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_rsassa_pss_verify_ext( NULL, NULL, NULL,
@@ -417,6 +447,13 @@
                                                                0, sizeof( buf ),
                                                                buf, 0, 0,
                                                                NULL ) );
+    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
+                            mbedtls_rsa_rsassa_pss_verify_ext( &ctx, NULL, NULL,
+                                                               valid_mode,
+                                                               MBEDTLS_MD_SHA1,
+                                                               0, NULL,
+                                                               0, 0,
+                                                               buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
                             mbedtls_rsa_copy( NULL, &ctx ) );