diff --git a/cores/esp8266/core_esp8266_wiring_digital.cpp b/cores/esp8266/core_esp8266_wiring_digital.cpp
index 5bf59172f..8f7f6c16d 100644
--- a/cores/esp8266/core_esp8266_wiring_digital.cpp
+++ b/cores/esp8266/core_esp8266_wiring_digital.cpp
@@ -126,10 +126,10 @@ typedef struct {
 	void* functionInfo;
 } ArgStructure;
 
-static interrupt_handler_t interrupt_handlers[16] = {0,};
+static interrupt_handler_t interrupt_handlers[16] = {0};
 static uint32_t interrupt_reg = 0;
 
-void ICACHE_RAM_ATTR interrupt_handler(void *arg) {
+void ICACHE_RAM_ATTR interrupt_handler(void *) {
   uint32_t status = GPIE;
   GPIEC = status;//clear them interrupts
   uint32_t levels = GPI;