diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 29bc1c496f..a4473cae80 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1146,21 +1146,21 @@ exit:
 /* END_CASE */
 
 /* BEGIN_CASE depends_on:MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
-void ssl_set_hostname_twice(char *hostname0, char *hostname1)
+void ssl_set_hostname_twice(char *input_hostname0, char *input_hostname1)
 {
-    const char *hostname;
+    const char *output_hostname;
     mbedtls_ssl_context ssl;
 
     mbedtls_ssl_init(&ssl);
     USE_PSA_INIT();
 
-    TEST_ASSERT(mbedtls_ssl_set_hostname(&ssl, hostname0) == 0);
-    hostname = mbedtls_ssl_get_hostname(&ssl);
-    TEST_ASSERT(strcmp(hostname0, hostname) == 0);
+    TEST_ASSERT(mbedtls_ssl_set_hostname(&ssl, input_hostname0) == 0);
+    output_hostname = mbedtls_ssl_get_hostname(&ssl);
+    TEST_ASSERT(strcmp(input_hostname0, output_hostname) == 0);
 
-    TEST_ASSERT(mbedtls_ssl_set_hostname(&ssl, hostname1) == 0);
-    hostname = mbedtls_ssl_get_hostname(&ssl);
-    TEST_ASSERT(strcmp(hostname1, hostname) == 0);
+    TEST_ASSERT(mbedtls_ssl_set_hostname(&ssl, input_hostname1) == 0);
+    output_hostname = mbedtls_ssl_get_hostname(&ssl);
+    TEST_ASSERT(strcmp(input_hostname1, output_hostname) == 0);
 
 exit:
     mbedtls_ssl_free(&ssl);