diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f65db283..59054dda 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -27,6 +27,7 @@ function(add_uvw_library LIB_NAME)
             uvw/timer.cpp
             uvw/tty.cpp
             uvw/udp.cpp
+            uvw/util.cpp
             uvw/work.cpp
     )
 
diff --git a/src/uvw.hpp b/src/uvw.hpp
index f094f5d9..aaf8f4c7 100644
--- a/src/uvw.hpp
+++ b/src/uvw.hpp
@@ -23,5 +23,5 @@
 #include "uvw/tty.h"
 #include "uvw/udp.h"
 #include "uvw/underlying_type.hpp"
-#include "uvw/util.hpp"
+#include "uvw/util.h"
 #include "uvw/work.h"