diff --git a/libc/Makefile b/libc/Makefile
index 267ed0a3..5b8e02b4 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -145,6 +145,7 @@ wcsrchr.o \
 wcsrtombs.o \
 wcsspn.o \
 wcstok.o \
+wcstombs.o \
 wctomb.o \
 wctype.o \
 
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 0ddf5476..e8ae6597 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -1,6 +1,6 @@
 /*******************************************************************************
 
-    Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
+    Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
 
     This file is part of the Sortix C Library.
 
@@ -100,6 +100,7 @@ unsigned long long strtoull(const char* restrict, char** restrict, int);
 long long strtoll(const char* restrict, char** restrict, int);
 int system(const char*);
 int unsetenv(const char*);
+size_t wcstombs(char* restrict, const wchar_t *restrict, size_t);
 int wctomb(char*, wchar_t);
 
 #if defined(_SORTIX_SOURCE) || defined(_WANT_SORTIX_ENV)
@@ -149,7 +150,6 @@ double strtod(const char* restrict, char** restrict);
 float strtof(const char* restrict, char** restrict);
 long double strtold(const char* restrict, char** restrict);
 int unlockpt(int);
-size_t wcstombs(char* restrict, const wchar_t *restrict, size_t);
 
 #if __POSIX_OBSOLETE <= 200801
 int rand_r(unsigned *);
diff --git a/libc/wcstombs.cpp b/libc/wcstombs.cpp
new file mode 100644
index 00000000..23598024
--- /dev/null
+++ b/libc/wcstombs.cpp
@@ -0,0 +1,38 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    wcstombs.cpp
+    Convert a wide-character string to multibyte string.
+
+*******************************************************************************/
+
+#include <stdlib.h>
+#include <wchar.h>
+
+extern "C" size_t wcstombs(char* dst, const wchar_t* src, size_t n)
+{
+	// Reset the secret conversion state variable in wcsrtombs that is used when
+	// ps is NULL by successfully converting the empty string. As always, this
+	// is not multithread secure. For some reason, the standards don't mandate
+	// that the conversion state is reset when wcsrtombs is called with ps=NULL,
+	// which arguably is a feature - but this function is supposed to do it.
+	const wchar_t* empty_string = L"";
+	wcsrtombs(NULL, &empty_string, 0, NULL);
+	return wcsrtombs(dst, &src, n, NULL);
+}