diff --git a/tests/driver_pcf857x/app.config.test b/tests/driver_pcf857x/app.config.test
index 6450e2f603e2..bb59bbec8413 100644
--- a/tests/driver_pcf857x/app.config.test
+++ b/tests/driver_pcf857x/app.config.test
@@ -7,4 +7,3 @@ CONFIG_MODULE_PCF857X_IRQ=y
 
 CONFIG_MODULE_SHELL=y
 CONFIG_MODULE_BENCHMARK=y
-CONFIG_ZTIMER_USEC=y