diff --git a/lib/axp192/axp20x.cpp b/lib/axp192/axp20x.cpp
index baf9253..94889b9 100644
--- a/lib/axp192/axp20x.cpp
+++ b/lib/axp192/axp20x.cpp
@@ -654,7 +654,7 @@ void AXP20X_Class::clearIRQ()
     uint8_t val = 0xFF;
     switch (_chip_id) {
     case AXP192_CHIP_ID:
-        for (int i = 0; i < 3; i++) {
+        for (int i = 0; i < 4; i++) {
             _writeByte(AXP192_INTSTS1 + i, 1, &val);
         }
         _writeByte(AXP192_INTSTS5, 1, &val);