diff --git a/CMakeLists.txt b/CMakeLists.txt
index 384ab38..1b4f6d2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,7 @@ if (MSVC)
 	add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 endif()
 
+check_include_file(stdint.h HAVE_STDINT_H)
 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
 if (HAVE_SYS_TYPES_H)
 set (CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES} "sys/types.h")
diff --git a/src/system.h.in b/src/system.h.in
index 49a7616..dce1892 100644
--- a/src/system.h.in
+++ b/src/system.h.in
@@ -61,7 +61,8 @@
 #include <errno.h>
 #include <fcntl.h>
 
-#ifndef __sun__
+#cmakedefine HAVE_STDINT_H
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
 #endif