diff --git a/Sources/Errno.swift b/Sources/Errno.swift
index acef4235..080cec11 100644
--- a/Sources/Errno.swift
+++ b/Sources/Errno.swift
@@ -10,6 +10,6 @@ import Foundation
 public class Errno {
     
     public class func description() -> String {
-        return String(cString: UnsafePointer(strerror(errno)))
+        return String(cString: UnsafePointer<UInt8>(strerror(errno)))
     }
 }