diff --git a/tests/scripts/generate_psa_wrappers.py b/tests/scripts/generate_psa_wrappers.py
index 3cdafed..1f3b127 100755
--- a/tests/scripts/generate_psa_wrappers.py
+++ b/tests/scripts/generate_psa_wrappers.py
@@ -154,6 +154,12 @@
                              'psa_sign_hash',
                              'psa_verify_hash'):
             return True
+        if function_name in ('psa_mac_update',
+                             'psa_mac_sign_finish',
+                             'psa_mac_verify_finish',
+                             'psa_mac_compute',
+                             'psa_mac_verify'):
+            return True
         return False
 
     def _write_function_call(self, out: typing_util.Writable,
diff --git a/tests/src/psa_test_wrappers.c b/tests/src/psa_test_wrappers.c
index bb1409e..333a85c 100644
--- a/tests/src/psa_test_wrappers.c
+++ b/tests/src/psa_test_wrappers.c
@@ -704,7 +704,15 @@
     size_t arg5_mac_size,
     size_t *arg6_mac_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_mac, arg5_mac_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_mac_compute)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_mac, arg5_mac_size, arg6_mac_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_mac, arg5_mac_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -715,7 +723,13 @@
     size_t arg2_mac_size,
     size_t *arg3_mac_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_mac, arg2_mac_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_mac_sign_finish)(arg0_operation, arg1_mac, arg2_mac_size, arg3_mac_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_mac, arg2_mac_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -735,7 +749,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_mac_update)(arg0_operation, arg1_input, arg2_input_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -748,7 +768,15 @@
     const uint8_t *arg4_mac,
     size_t arg5_mac_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_mac, arg5_mac_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_mac_verify)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_mac, arg5_mac_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_mac, arg5_mac_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -758,7 +786,13 @@
     const uint8_t *arg1_mac,
     size_t arg2_mac_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_mac, arg2_mac_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_mac_verify_finish)(arg0_operation, arg1_mac, arg2_mac_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_mac, arg2_mac_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }