diff --git a/libraries/ESP8266WiFi/src/lwip/mem_manager.h b/libraries/ESP8266WiFi/src/lwip/mem_manager.h
index 58c2a02ae..cb237f4f8 100644
--- a/libraries/ESP8266WiFi/src/lwip/mem_manager.h
+++ b/libraries/ESP8266WiFi/src/lwip/mem_manager.h
@@ -69,9 +69,9 @@ static const unsigned short heapSTRUCT_SIZE	= ( sizeof( xBlockLink ) + portBYTE_
 
 void vApplicationMallocFailedHook( void ) ;//ICACHE_FLASH_ATTR;
 
-//void *pvPortMalloc( size_t xWantedSize ) ;//ICACHE_FLASH_ATTR;
+void *pvPortMalloc( size_t xWantedSize ) ;//ICACHE_FLASH_ATTR;
 
-//void vPortFree( void *pv ) ;//ICACHE_FLASH_ATTR;
+void vPortFree( void *pv ) ;//ICACHE_FLASH_ATTR;
 
 size_t xPortGetFreeHeapSize( void ) ;//ICACHE_FLASH_ATTR;