diff --git a/wiringPi/test/wiringpi_test61_isr2.c b/wiringPi/test/wiringpi_test61_isr2.c
index 78a442a..67bb35f 100644
--- a/wiringPi/test/wiringpi_test61_isr2.c
+++ b/wiringPi/test/wiringpi_test61_isr2.c
@@ -219,7 +219,7 @@ int main (void) {
     case PI_MODEL_ZERO:
     case PI_MODEL_ZERO_W: //ARM=1000MHz
       accuracy = 0.02;
-      bounce_acc = 2.5;
+      bounce_acc = 2.7;
       break;
     default:
       accuracy = 0.012;