diff --git a/src/TachSensor.cpp b/src/TachSensor.cpp
index 7c026b8..0a7048a 100644
--- a/src/TachSensor.cpp
+++ b/src/TachSensor.cpp
@@ -191,7 +191,7 @@
     restartRead(pollTime);
 }
 
-void TachSensor::checkThresholds(void)
+void TachSensor::checkThresholds()
 {
     bool status = thresholds::checkThresholds(this);
 
@@ -253,7 +253,7 @@
     gpioLine.release();
 }
 
-void PresenceSensor::monitorPresence(void)
+void PresenceSensor::monitorPresence()
 {
     gpioFd.async_wait(boost::asio::posix::stream_descriptor::wait_read,
                       [this](const boost::system::error_code& ec) {
@@ -274,7 +274,7 @@
     });
 }
 
-void PresenceSensor::read(void)
+void PresenceSensor::read()
 {
     gpioLine.event_read();
     status = (gpioLine.get_value() != 0);
@@ -289,7 +289,7 @@
     }
 }
 
-bool PresenceSensor::getValue(void) const
+bool PresenceSensor::getValue() const
 {
     return status;
 }