diff --git a/cores/esp32/esp32-hal-misc.c b/cores/esp32/esp32-hal-misc.c
index 0d72e752..92e82f42 100644
--- a/cores/esp32/esp32-hal-misc.c
+++ b/cores/esp32/esp32-hal-misc.c
@@ -62,6 +62,11 @@ void arduino_phy_init()
 }
 #endif
 
+void yield()
+{
+    vPortYield();
+}
+
 uint32_t IRAM_ATTR micros()
 {
     uint32_t ccount;
diff --git a/cores/esp32/esp32-hal.h b/cores/esp32/esp32-hal.h
index c0072ca9..4547907b 100644
--- a/cores/esp32/esp32-hal.h
+++ b/cores/esp32/esp32-hal.h
@@ -39,8 +39,8 @@ extern "C" {
 #endif
 
 //forward declaration from freertos/portmacro.h
-void vPortYield( void );
-#define yield() vPortYield()
+void vPortYield(void);
+void yield(void);
 #define optimistic_yield(u)
 
 #define ESP_REG(addr) *((volatile uint32_t *)(addr))