diff --git a/src/main/Makefile.am b/src/main/Makefile.am
index 651e5f690..06d64a751 100644
--- a/src/main/Makefile.am
+++ b/src/main/Makefile.am
@@ -4,8 +4,8 @@
 # This is necessary because some platforms have special program
 # entry points, which require special application initialization.
 
-ARCH_SUBDIRS = $(srcdir)/beos $(srcdir)/linux $(srcdir)/macos \
-	$(srcdir)/win32
+ARCH_SUBDIRS = $(srcdir)/beos $(srcdir)/linux \
+               $(srcdir)/macos $(srcdir)/macosx $(srcdir)/win32
 
 # Build a separate library containing the main() entry point.
 lib_LIBRARIES = libSDLmain.a