diff --git a/tests/include/test/ssl_helpers.h b/tests/include/test/ssl_helpers.h
index 281d1f55a9..2c6bf790a2 100644
--- a/tests/include/test/ssl_helpers.h
+++ b/tests/include/test/ssl_helpers.h
@@ -101,6 +101,9 @@ typedef struct mbedtls_test_handshake_test_options {
 #endif
 } mbedtls_test_handshake_test_options;
 
+/*
+ * Buffer structure for custom I/O callbacks.
+ */
 typedef struct mbedtls_test_ssl_buffer {
     size_t start;
     size_t content_length;
@@ -460,6 +463,12 @@ int mbedtls_test_move_handshake_to_state(mbedtls_ssl_context *ssl,
         }                                       \
     } while (0)
 
+#if MBEDTLS_SSL_CID_OUT_LEN_MAX > MBEDTLS_SSL_CID_IN_LEN_MAX
+#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_IN_LEN_MAX
+#else
+#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_OUT_LEN_MAX
+#endif
+
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
     defined(MBEDTLS_CIPHER_MODE_CBC) && defined(MBEDTLS_AES_C)
 int mbedtls_test_psa_cipher_encrypt_helper(mbedtls_ssl_transform *transform,
diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index a698f379b7..b82a72c6cb 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -124,10 +124,6 @@ static void reset_chk_buf_ptr_args(mbedtls_ssl_chk_buf_ptr_args *args)
 }
 #endif /* MBEDTLS_TEST_HOOKS */
 
-/*
- * Buffer structure for custom I/O callbacks.
- */
-
 void mbedtls_test_ssl_buffer_init(mbedtls_test_ssl_buffer *buf)
 {
     memset(buf, 0, sizeof(*buf));
@@ -1023,12 +1019,6 @@ int psk_dummy_callback(void *p_info, mbedtls_ssl_context *ssl,
     return 0;
 }
 
-#if MBEDTLS_SSL_CID_OUT_LEN_MAX > MBEDTLS_SSL_CID_IN_LEN_MAX
-#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_IN_LEN_MAX
-#else
-#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_OUT_LEN_MAX
-#endif
-
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
     defined(MBEDTLS_CIPHER_MODE_CBC) && defined(MBEDTLS_AES_C)
 int mbedtls_test_psa_cipher_encrypt_helper(mbedtls_ssl_transform *transform,
@@ -1736,7 +1726,6 @@ exit:
 }
 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
 
-
 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
 void mbedtls_test_ssl_perform_handshake(
     mbedtls_test_handshake_test_options *options)