diff --git a/include/os/windows/spl/strings.h b/include/os/windows/spl/strings.h
deleted file mode 100644
index 0048ab771daf..000000000000
--- a/include/os/windows/spl/strings.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef _SPL_STRINGS_H
-#define	_SPL_STRINGS_H
-
-#endif /* SPL_STRINGS_H */
diff --git a/include/os/windows/spl/sys/strings.h b/include/os/windows/spl/sys/strings.h
deleted file mode 100644
index 24fbb8091560..000000000000
--- a/include/os/windows/spl/sys/strings.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License").  You may not use this file except in compliance
- * with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-#ifndef _SPL_STRINGS_H
-#define	_SPL_STRINGS_H
-
-#endif
diff --git a/lib/libspl/include/os/windows/strings.h b/lib/libspl/include/os/windows/strings.h
deleted file mode 100644
index 872b50239ca7..000000000000
--- a/lib/libspl/include/os/windows/strings.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License").  You may not use this file except in compliance
- * with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#ifndef _LIBSPL_STRINGS_H
-#define	_LIBSPL_STRINGS_H
-
-#include <string.h>
-
-#define	strtok_r strtok_s
-
-char *strsep(char **stringp, const char *delim);
-
-#endif