diff --git a/standby.c b/standby.c
index e919d8d..a45a9b3 100644
--- a/standby.c
+++ b/standby.c
@@ -13,22 +13,22 @@ void StandBy_Init(tStandBy *env) {
     PORT_InitType tInitStruct = {0};
     PORT_InterruptType tIntStruct = {0};
 
-    // wakeup source: Key1/PortA9; MUX = GPIO input
-    tInitStruct.u32PortPins = PORT_PIN_9;
+    // wakeup source: Key1/PortE16; MUX = GPIO input
+    tInitStruct.u32PortPins = PORT_PIN_16;
     tInitStruct.uPortPinMux.u32PortPinMode = PORT_GPIO_MODE;
     tInitStruct.bPullEn = true;
     tInitStruct.ePullSel = PORT_PULL_UP;
-    PORT_InitPins(PORT_A, &tInitStruct);
+    PORT_InitPins(PORT_E, &tInitStruct);
 
-    // enable PortA9 interrupt
-    tIntStruct.u32PortPins = PORT_PIN_9;
+    // enable PortE16 interrupt
+    tIntStruct.u32PortPins = PORT_PIN_16;
     tIntStruct.ePortIsrMode = PORT_IRQ_BOTH_EDGE;
     tIntStruct.pIsrNotify = Bsp_GpioFInt_CallbackFunction;
-    PORT_InitInterrupt(PORT_A, &tIntStruct);
+    PORT_InitInterrupt(PORT_E, &tIntStruct);
 
-    WKU_EnableWakeupSource(WKU_INPUT_GPIOA);
+    WKU_EnableWakeupSource(WKU_INPUT_GPIOE);
 
-    NVIC_SetPriority(PORTA_IRQn, 0xFF);
-    NVIC_EnableIRQ(PORTA_IRQn);
+    NVIC_SetPriority(PORTE_IRQn, 0xFF);
+    NVIC_EnableIRQ(PORTE_IRQn);
 
 }
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