diff --git a/cores/esp8266/core_esp8266_wiring_pwm.c b/cores/esp8266/core_esp8266_wiring_pwm.c
index 9d16b62b7..8d97895ff 100644
--- a/cores/esp8266/core_esp8266_wiring_pwm.c
+++ b/cores/esp8266/core_esp8266_wiring_pwm.c
@@ -103,7 +103,7 @@ void ICACHE_RAM_ATTR pwm_timer_isr(){
 		current_step = 0;
 		stepcount = 0;
 		if(pwm_mask == 0) return;
-		T1L = (pwm_steps[current_step+1] * pwm_multiplier);
+		T1L = (pwm_steps[current_step] * pwm_multiplier);
 		TEIE |= TEIE1;
 		if(pwm_mask & 0xFFFF) GPOS = pwm_mask & 0xFFFF;
 		if(pwm_mask & 0x10000) GP16O = 1;
diff --git a/libraries/ESP8266WiFi/src/lwip/mem_manager.h b/libraries/ESP8266WiFi/src/lwip/mem_manager.h
index 035596891..cb237f4f8 100644
--- a/libraries/ESP8266WiFi/src/lwip/mem_manager.h
+++ b/libraries/ESP8266WiFi/src/lwip/mem_manager.h
@@ -3,7 +3,7 @@
 
 #include "c_types.h"
 
-/*------------------------±äÁ¿¶¨Òå------------------------*/
+/*------------------------��������------------------------*/
 
 #define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
 #ifndef IOT_SIP_MODE
@@ -61,7 +61,7 @@ static const unsigned short heapSTRUCT_SIZE	= ( sizeof( xBlockLink ) + portBYTE_
 //static size_t xFreeBytesRemaining = ( ( size_t ) configADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK );
 
 
-/*------------------------º¯ÊýÉùÃ÷-----------------------------------*/
+/*------------------------��������-----------------------------------*/
 
 //static void prvInsertBlockIntoFreeList( xBlockLink *pxBlockToInsert ) ;//ICACHE_FLASH_ATTR;