diff --git a/components/mbedtls/port/esp_platform_time.c b/components/mbedtls/port/esp_platform_time.c
index 541b664ab9..1b30774b83 100644
--- a/components/mbedtls/port/esp_platform_time.c
+++ b/components/mbedtls/port/esp_platform_time.c
@@ -8,7 +8,7 @@
 #include "mbedtls/platform_time.h"
 
 #ifdef MBEDTLS_PLATFORM_MS_TIME_ALT
-mbedtls_ms_time_t mbedtls_ms_time()
+mbedtls_ms_time_t mbedtls_ms_time(void)
 {
     int ret;
     struct timespec tv = {};