diff --git a/pico_w/wifi/mbedtls_config_examples_common.h b/pico_w/wifi/mbedtls_config_examples_common.h
index 5ffe3b6e6..fbfae97a3 100644
--- a/pico_w/wifi/mbedtls_config_examples_common.h
+++ b/pico_w/wifi/mbedtls_config_examples_common.h
@@ -11,6 +11,7 @@
 
 #define MBEDTLS_ALLOW_PRIVATE_ACCESS
 #define MBEDTLS_HAVE_TIME
+#define MBEDTLS_PLATFORM_MS_TIME_ALT
 
 #define MBEDTLS_CIPHER_MODE_CBC
 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED