diff --git a/gpio.hpp b/gpio.hpp
index 9fa8e63..edbb850 100644
--- a/gpio.hpp
+++ b/gpio.hpp
@@ -12,8 +12,8 @@
 namespace gpio
 {
 
-typedef std::remove_reference<decltype(
-    gpiohandle_request::lineoffsets[0])>::type gpioNum_t;
+typedef std::remove_reference<
+    decltype(gpiohandle_request::lineoffsets[0])>::type gpioNum_t;
 
 typedef std::remove_reference<decltype(gpiohandle_data::values[0])>::type
     gpioValue_t;