diff --git a/tests/suites/test_suite_pkcs7.function b/tests/suites/test_suite_pkcs7.function
index e5dc4bd..0c4a00b 100644
--- a/tests/suites/test_suite_pkcs7.function
+++ b/tests/suites/test_suite_pkcs7.function
@@ -33,9 +33,17 @@
 void pkcs7_asn1_fail(data_t *pkcs7_buf)
 {
     int res;
+
+    /* PKCS7 uses X509 which itself relies on PK under the hood and the latter
+     * can use PSA to store keys and perform operations so psa_crypto_init()
+     * must be called before. */
+    USE_PSA_INIT();
+
     res = pkcs7_parse_buffer(pkcs7_buf->x, pkcs7_buf->len);
     TEST_ASSERT(res != MBEDTLS_PKCS7_SIGNED_DATA);
 
+exit:
+    USE_PSA_DONE();
 }
 /* END_CASE */
 
@@ -46,6 +54,11 @@
     size_t buflen;
     int res;
 
+    /* PKCS7 uses X509 which itself relies on PK under the hood and the latter
+     * can use PSA to store keys and perform operations so psa_crypto_init()
+     * must be called before. */
+    USE_PSA_INIT();
+
     res = mbedtls_pk_load_file(pkcs7_file, &pkcs7_buf, &buflen);
     TEST_EQUAL(res, 0);
 
@@ -54,6 +67,7 @@
 
 exit:
     mbedtls_free(pkcs7_buf);
+    USE_PSA_DONE();
 }
 /* END_CASE */
 
@@ -77,7 +91,7 @@
     mbedtls_pkcs7 pkcs7;
     mbedtls_x509_crt **crts = NULL;
 
-    MD_OR_USE_PSA_INIT();
+    USE_PSA_INIT();
 
     mbedtls_pkcs7_init(&pkcs7);
 
@@ -166,6 +180,6 @@
     mbedtls_free(crts);
     mbedtls_free(data);
     mbedtls_free(pkcs7_buf);
-    MD_OR_USE_PSA_DONE();
+    USE_PSA_DONE();
 }
 /* END_CASE */
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 7bcac86..8225adb 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -1668,6 +1668,9 @@
     mbedtls_x509_crt crt;
 
     mbedtls_x509_crt_init(&crt);
+    /* X509 relies on PK under the hood and the latter can use PSA to store keys
+     * and perform operations so psa_crypto_init() must be called before. */
+    USE_PSA_INIT();
 
     TEST_EQUAL(mbedtls_x509_crt_parse_file(&crt, file), ref_ret);
 
@@ -1682,6 +1685,7 @@
 
 exit:
     mbedtls_x509_crt_free(&crt);
+    USE_PSA_DONE();
 }
 /* END_CASE */
 
@@ -1697,6 +1701,9 @@
     char name_buf[128];
 
     mbedtls_x509_crt_init(&crt);
+    /* X509 relies on PK under the hood and the latter can use PSA to store keys
+     * and perform operations so psa_crypto_init() must be called before. */
+    USE_PSA_INIT();
 
     TEST_EQUAL(mbedtls_x509_crt_parse_file(&crt, file), ref_ret);
 
@@ -1748,6 +1755,7 @@
 
 exit:
     mbedtls_x509_crt_free(&crt);
+    USE_PSA_DONE();
 }
 /* END_CASE */