diff --git a/Makefile.am b/Makefile.am
index 020110e5..994edc27 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -288,11 +288,6 @@ POSIX_FILES = 			\
     library_posix.hpp		\
     library_posix.cpp		\
     posix/fwd.hpp		\
-    posix/dir.cpp		\
-    posix/dir.hpp		\
-    posix/dir.ipp		\
-    posix/fd.cpp		\
-    posix/fd.hpp		\
     posix/map.cpp		\
     posix/map.hpp		\
     time_posix.cpp
@@ -306,6 +301,13 @@ if PLATFORM_FREEBSD
 UTIL_FILES += $(POSIX_FILES) exe_freebsd.cpp
 endif
 
+UTIL_FILES += 			\
+    posix/dir.cpp		\
+    posix/dir.hpp		\
+    posix/dir.ipp		\
+    posix/fd.cpp		\
+    posix/fd.hpp
+
 if PLATFORM_WIN32
 UTIL_FILES += 			\
     debug_win32.cpp		\