diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1dcfd9e..01b14e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -321,6 +321,7 @@
   set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
 endif()
 check_function_exists(inet_aton HAVE_INET_ATON)
+check_function_exists(inet_pton HAVE_INET_PTON)
 check_function_exists(getaddrinfo HAVE_GETADDRINFO)
 set(CMAKE_EXTRA_INCLUDE_FILES) 
 set(CMAKE_REQUIRED_LIBRARIES)