diff --git a/gpio.hpp b/gpio.hpp
index 04100da..2742d4f 100644
--- a/gpio.hpp
+++ b/gpio.hpp
@@ -1,18 +1,22 @@
 #pragma once
 
-#include <linux/gpio.h>
 #include "file.hpp"
 
+#include <linux/gpio.h>
+
+#include <string>
+#include <type_traits>
+
 namespace witherspoon
 {
 namespace gpio
 {
 
 typedef std::remove_reference<decltype(
-     gpiohandle_request::lineoffsets[0])>::type gpioNum_t;
+    gpiohandle_request::lineoffsets[0])>::type gpioNum_t;
 
-typedef std::remove_reference<decltype(
-     gpiohandle_data::values[0])>::type gpioValue_t;
+typedef std::remove_reference<decltype(gpiohandle_data::values[0])>::type
+    gpioValue_t;
 
 /**
  * If the GPIO is an input or output
@@ -41,79 +45,73 @@
  */
 class GPIO
 {
-    public:
+  public:
+    GPIO() = delete;
+    GPIO(const GPIO&) = delete;
+    GPIO(GPIO&&) = default;
+    GPIO& operator=(const GPIO&) = delete;
+    GPIO& operator=(GPIO&&) = default;
+    ~GPIO() = default;
 
-        GPIO() = delete;
-        GPIO(const GPIO&) = delete;
-        GPIO(GPIO&&) = default;
-        GPIO& operator=(const GPIO&) = delete;
-        GPIO& operator=(GPIO&&) = default;
-        ~GPIO() = default;
+    /**
+     * Constructor
+     *
+     * @param[in] device - the GPIO device file
+     * @param[in] gpio - the GPIO number
+     * @param[in] direction - the GPIO direction
+     */
+    GPIO(const std::string& device, gpioNum_t gpio, Direction direction) :
+        device(device), gpio(gpio), direction(direction)
+    {
+    }
 
-        /**
-         * Constructor
-         *
-         * @param[in] device - the GPIO device file
-         * @param[in] gpio - the GPIO number
-         * @param[in] direction - the GPIO direction
-         */
-        GPIO(const std::string& device,
-             gpioNum_t gpio,
-             Direction direction) :
-            device(device),
-            gpio(gpio),
-            direction(direction)
-        {
-        }
+    /**
+     * Reads the GPIO value
+     *
+     * Requests the GPIO line if it hasn't been done already.
+     *
+     * @return Value - the GPIO value
+     */
+    Value read();
 
-        /**
-         * Reads the GPIO value
-         *
-         * Requests the GPIO line if it hasn't been done already.
-         *
-         * @return Value - the GPIO value
-         */
-        Value read();
+    /**
+     * Sets the GPIO value to low or high
+     *
+     * Requests the GPIO line if it hasn't been done already.
+     *
+     * @param[in] Value - the value to set
+     */
+    void set(Value value);
 
-        /**
-         * Sets the GPIO value to low or high
-         *
-         * Requests the GPIO line if it hasn't been done already.
-         *
-         * @param[in] Value - the value to set
-         */
-        void set(Value value);
+  private:
+    /**
+     * Requests a GPIO line from the GPIO device
+     *
+     * @param[in] defaultValue - The default value, required for
+     *                           output GPIOs only.
+     */
+    void requestLine(Value defaultValue = Value::high);
 
-    private:
+    /**
+     * The GPIO device name, like /dev/gpiochip0
+     */
+    const std::string device;
 
-        /**
-         * Requests a GPIO line from the GPIO device
-         *
-         * @param[in] defaultValue - The default value, required for
-         *                           output GPIOs only.
-         */
-        void requestLine(Value defaultValue = Value::high);
+    /**
+     * The GPIO number
+     */
+    const gpioNum_t gpio;
 
-        /**
-         * The GPIO device name, like /dev/gpiochip0
-         */
-        const std::string device;
+    /**
+     * The GPIO direction
+     */
+    const Direction direction;
 
-        /**
-         * The GPIO number
-         */
-        const gpioNum_t gpio;
-
-        /**
-         * The GPIO direction
-         */
-        const Direction direction;
-
-        /**
-         * File descriptor for the GPIO line
-         */
-        power::util::FileDescriptor lineFD;
+    /**
+     * File descriptor for the GPIO line
+     */
+    power::util::FileDescriptor lineFD;
 };
 
-}
-}
+} // namespace gpio
+} // namespace witherspoon