diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 88558752607..5796f353d9c 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -1174,7 +1174,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index 1937ffc9efb..cd54513a59e 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -1531,7 +1531,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/msvcr120/msvcr120.spec b/dlls/msvcr120/msvcr120.spec
index 462a42b719b..1bb81f3f257 100644
--- a/dlls/msvcr120/msvcr120.spec
+++ b/dlls/msvcr120/msvcr120.spec
@@ -1542,7 +1542,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index 822a43d5765..9dbe665cd02 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -846,7 +846,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 32075829392..391be34a624 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -824,7 +824,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index 52b882a2fba..ba9e034cd0d 100644
--- a/dlls/msvcrt/mbcs.c
+++ b/dlls/msvcrt/mbcs.c
@@ -150,6 +150,11 @@ static inline unsigned char *u_strchr( const unsigned char *s, unsigned char x )
   return (unsigned char*) strchr( (const char*)s, x );
 }
 
+static inline unsigned char* u_strpbrk(const unsigned char *str, const unsigned char *accept)
+{
+  return (unsigned char*)strpbrk((const char*)str, (const char*)accept);
+}
+
 static inline unsigned char *u_strrchr( const unsigned char *s, unsigned char x )
 {
   return (unsigned char*) strrchr( (const char*)s, x );
@@ -2871,25 +2876,45 @@ unsigned char* CDECL _mbsrev(unsigned char* str)
 }
 
 /*********************************************************************
- *		_mbspbrk (MSVCRT.@)
+ *		_mbspbrk_l (MSVCRT.@)
  */
-unsigned char* CDECL _mbspbrk(const unsigned char* str, const unsigned char* accept)
+unsigned char* CDECL _mbspbrk_l(const unsigned char *str,
+        const unsigned char *accept, _locale_t locale)
 {
     const unsigned char* p;
+    pthreadmbcinfo mbcinfo;
 
-    while(*str)
+    if (locale)
+        mbcinfo = locale->mbcinfo;
+    else
+        mbcinfo = get_mbcinfo();
+
+    if (!mbcinfo->ismbcodepage)
+        return u_strpbrk(str, accept);
+
+    if (!MSVCRT_CHECK_PMT(str && accept))
+        return NULL;
+
+    while (*str)
     {
-        for(p = accept; *p; p += (_ismbblead(*p)?2:1) )
+        for (p = accept; *p; p += (_ismbblead_l(*p, locale) ? 2 : 1))
         {
             if (*p == *str)
-                if( !_ismbblead(*p) || ( *(p+1) == *(str+1) ) )
-                     return (unsigned char*)str;
+                if (!_ismbblead_l(*p, locale) || p[1] == str[1])
+                    return (unsigned char*)str;
         }
-        str += (_ismbblead(*str)?2:1);
+        str += (_ismbblead_l(*str, locale) ? 2 : 1);
     }
     return NULL;
 }
 
+/*********************************************************************
+ *		_mbspbrk (MSVCRT.@)
+ */
+unsigned char* CDECL _mbspbrk(const unsigned char *str, const unsigned char *accept)
+{
+    return _mbspbrk_l(str, accept, NULL);
+}
 
 /*
  * Functions depending on locale codepage
diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index 430e0f9d5af..a40321b747a 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -795,7 +795,7 @@
 # stub _mbsnset_s(ptr long long long)
 # stub _mbsnset_s_l(ptr long long long ptr)
 @ cdecl _mbspbrk(str str)
-# stub _mbspbrk_l(str str ptr)
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
diff --git a/dlls/ucrtbase/ucrtbase.spec b/dlls/ucrtbase/ucrtbase.spec
index 75f21a447c7..8b0420987de 100644
--- a/dlls/ucrtbase/ucrtbase.spec
+++ b/dlls/ucrtbase/ucrtbase.spec
@@ -690,7 +690,7 @@
 @ stub _mbsnset_s
 @ stub _mbsnset_s_l
 @ cdecl _mbspbrk(str str)
-@ stub _mbspbrk_l
+@ cdecl _mbspbrk_l(str str ptr)
 @ cdecl _mbsrchr(str long)
 @ cdecl _mbsrchr_l(str long ptr)
 @ cdecl _mbsrev(str)
@@ -1259,7 +1259,7 @@
 @ stub _o__mbsnset_s
 @ stub _o__mbsnset_s_l
 @ cdecl _o__mbspbrk(str str) _mbspbrk
-@ stub _o__mbspbrk_l
+@ cdecl _o__mbspbrk_l(str str ptr) _mbspbrk_l
 @ cdecl _o__mbsrchr(str long) _mbsrchr
 @ cdecl _o__mbsrchr_l(str long ptr) _mbsrchr_l
 @ cdecl _o__mbsrev(str) _mbsrev