diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9b401d..3850d3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 - FAQ Section in README
+- xinput2: XIMaskLen macro translation
 
 ### Changed
 
diff --git a/src/xinput2.rs b/src/xinput2.rs
index 9f3e7cb..c02871d 100644
--- a/src/xinput2.rs
+++ b/src/xinput2.rs
@@ -21,6 +21,10 @@ pub fn XIMaskIsSet(mask: &[::std::os::raw::c_uchar], event: i32) -> bool {
     (mask[mask_byte(event)] & (1 << (event & 7))) != 0
 }
 
+pub fn XIMaskLen(event: i32) -> usize {
+    mask_byte(event) + 1
+}
+
 //
 // functions
 //
diff --git a/x11-dl/src/link.rs b/x11-dl/src/link.rs
index af88a70..786e595 100644
--- a/x11-dl/src/link.rs
+++ b/x11-dl/src/link.rs
@@ -179,11 +179,11 @@ impl DynamicLibrary {
 }
 
 impl Drop for DynamicLibrary {
-  fn drop (&mut self) {
-    unsafe {
-      libc::dlclose(self.handle as *mut _);
+    fn drop(&mut self) {
+        unsafe {
+            libc::dlclose(self.handle as *mut _);
+        }
     }
-  }
 }
 
 unsafe impl Send for DynamicLibrary {}