diff --git a/libntfs/Makefile.am b/libntfs/Makefile.am
index a26d04d9..97bfd311 100644
--- a/libntfs/Makefile.am
+++ b/libntfs/Makefile.am
@@ -63,3 +63,6 @@ libntfs_la_SOURCES =	\
 
 INCLUDES = $(linux_ntfsincludedir) $(all_includes)
 
+EXTRA_DIST =	\
+	win32_io.c
+
diff --git a/libntfs/Makefile.in b/libntfs/Makefile.in
index fa5b8574..ad016559 100644
--- a/libntfs/Makefile.in
+++ b/libntfs/Makefile.in
@@ -152,6 +152,10 @@ libntfs_la_SOURCES = \
 
 
 INCLUDES = $(linux_ntfsincludedir) $(all_includes)
+
+EXTRA_DIST = \
+	win32_io.c
+
 subdir = libntfs
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
 CONFIG_HEADER = $(top_builddir)/config.h