diff --git a/include/Makefile.in b/include/Makefile.in
index d5a5e201816..b7a4618b976 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -65,6 +65,7 @@ INSTALLED_INCLUDES = \
 	msvcrt/mbstring.h \
 	msvcrt/process.h \
 	msvcrt/search.h \
+	msvcrt/share.h \
 	msvcrt/stddef.h \
 	msvcrt/stdio.h \
 	msvcrt/stdlib.h \
diff --git a/include/msvcrt/share.h b/include/msvcrt/share.h
new file mode 100644
index 00000000000..979b24300d0
--- /dev/null
+++ b/include/msvcrt/share.h
@@ -0,0 +1,35 @@
+/*
+ * share.h
+ *
+ * Constants for file sharing functions.
+ *
+ * Derived from the Mingw32 header written by Colin Peters.
+ * Modified for Wine use by Bill Medland
+ * This file is in the public domain.
+ *
+ * Original header contained the following
+ *
+ *  THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ *  This source code is offered for use in the public domain. You may
+ *  use, modify or distribute it freely.
+ *
+ *  This code is distributed in the hope that it will be useful but
+ *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ *  DISCLAMED. This includes but is not limited to warranties of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+#ifndef __WINE_SHARE_H
+#define __WINE_SHARE_H
+#define __WINE_USE_MSVCRT
+
+#define	SH_COMPAT	0x00	/* Compatibility */
+#define	SH_DENYRW	0x10	/* Deny read/write */
+#define	SH_DENYWR	0x20	/* Deny write */
+#define	SH_DENYRD	0x30	/* Deny read */
+#define	SH_DENYNO	0x40	/* Deny nothing */
+
+#endif	/* __WINE_SHARE_H_ */
+