diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 406e9e74089..2425f72052a 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -850,7 +850,7 @@
 @ cdecl _fstat64i32(long ptr) MSVCRT__fstat64i32
 @ stub _ftell_nolock
 @ cdecl -ret64 _ftelli64(ptr) MSVCRT__ftelli64
-@ stub _ftelli64_nolock
+@ cdecl -ret64 _ftelli64_nolock(ptr) MSVCRT__ftelli64_nolock
 @ cdecl _ftime32(ptr) MSVCRT__ftime32
 @ cdecl _ftime32_s(ptr) MSVCRT__ftime32_s
 @ cdecl _ftime64(ptr) MSVCRT__ftime64
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index 0c62d69fd5b..9fa1ac4d5d1 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -1198,7 +1198,7 @@
 @ cdecl _fstat64i32(long ptr) MSVCRT__fstat64i32
 @ stub _ftell_nolock
 @ cdecl -ret64 _ftelli64(ptr) MSVCRT__ftelli64
-@ stub _ftelli64_nolock
+@ cdecl -ret64 _ftelli64_nolock(ptr) MSVCRT__ftelli64_nolock
 @ cdecl _ftime32(ptr) MSVCRT__ftime32
 @ cdecl _ftime32_s(ptr) MSVCRT__ftime32_s
 @ cdecl _ftime64(ptr) MSVCRT__ftime64
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index 7123a06c9e8..334921b87c2 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -517,7 +517,7 @@
 @ cdecl _fstat64i32(long ptr) MSVCRT__fstat64i32
 @ stub _ftell_nolock
 @ cdecl -ret64 _ftelli64(ptr) MSVCRT__ftelli64
-@ stub _ftelli64_nolock
+@ cdecl -ret64 _ftelli64_nolock(ptr) MSVCRT__ftelli64_nolock
 @ cdecl _ftime32(ptr) MSVCRT__ftime32
 @ cdecl _ftime32_s(ptr) MSVCRT__ftime32_s
 @ cdecl _ftime64(ptr) MSVCRT__ftime64
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 41ce18324c3..1cbb339cd30 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -499,7 +499,7 @@
 @ cdecl _fstat64i32(long ptr) MSVCRT__fstat64i32
 @ stub _ftell_nolock
 @ cdecl -ret64 _ftelli64(ptr) MSVCRT__ftelli64
-@ stub _ftelli64_nolock
+@ cdecl -ret64 _ftelli64_nolock(ptr) MSVCRT__ftelli64_nolock
 @ cdecl _ftime32(ptr) MSVCRT__ftime32
 @ cdecl _ftime32_s(ptr) MSVCRT__ftime32_s
 @ cdecl _ftime64(ptr) MSVCRT__ftime64
diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index 9a0effd4bbb..43f80550972 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -4226,14 +4226,25 @@ int CDECL MSVCRT_fsetpos(MSVCRT_FILE* file, MSVCRT_fpos_t *pos)
  */
 __int64 CDECL MSVCRT__ftelli64(MSVCRT_FILE* file)
 {
-    __int64 pos;
+    __int64 ret;
 
     MSVCRT__lock_file(file);
+    ret = MSVCRT__ftelli64_nolock(file);
+    MSVCRT__unlock_file(file);
+
+    return ret;
+}
+
+/*********************************************************************
+ *		_ftelli64_nolock (MSVCRT.@)
+ */
+__int64 CDECL MSVCRT__ftelli64_nolock(MSVCRT_FILE* file)
+{
+    __int64 pos;
+
     pos = _telli64(file->_file);
-    if(pos == -1) {
-        MSVCRT__unlock_file(file);
+    if(pos == -1)
         return -1;
-    }
     if(file->_flag & (MSVCRT__IOMYBUF | MSVCRT__USERBUF))  {
         if(file->_flag & MSVCRT__IOWRT) {
             pos += file->_ptr - file->_base;
@@ -4258,10 +4269,8 @@ __int64 CDECL MSVCRT__ftelli64(MSVCRT_FILE* file)
         } else {
             char *p;
 
-            if(MSVCRT__lseeki64(file->_file, pos, SEEK_SET) != pos) {
-                MSVCRT__unlock_file(file);
+            if(MSVCRT__lseeki64(file->_file, pos, SEEK_SET) != pos)
                 return -1;
-            }
 
             pos -= file->_bufsiz;
             pos += file->_ptr - file->_base;
@@ -4277,7 +4286,6 @@ __int64 CDECL MSVCRT__ftelli64(MSVCRT_FILE* file)
         }
     }
 
-    MSVCRT__unlock_file(file);
     return pos;
 }
 
diff --git a/dlls/msvcrt/msvcrt.h b/dlls/msvcrt/msvcrt.h
index b5cf8b7bd3f..41f36320caa 100644
--- a/dlls/msvcrt/msvcrt.h
+++ b/dlls/msvcrt/msvcrt.h
@@ -920,6 +920,7 @@ int __cdecl      MSVCRT_ungetc(int,MSVCRT_FILE*);
 MSVCRT_wint_t __cdecl MSVCRT_fgetwc(MSVCRT_FILE*);
 MSVCRT_wint_t __cdecl MSVCRT_ungetwc(MSVCRT_wint_t,MSVCRT_FILE*);
 __int64 __cdecl  MSVCRT__ftelli64(MSVCRT_FILE* file);
+__int64 __cdecl  MSVCRT__ftelli64_nolock(MSVCRT_FILE*);
 void __cdecl     MSVCRT__exit(int);
 void __cdecl     MSVCRT_abort(void);
 MSVCRT_ulong* __cdecl MSVCRT___doserrno(void);
diff --git a/include/msvcrt/stdio.h b/include/msvcrt/stdio.h
index 0170d2eef31..90fc3f7db60 100644
--- a/include/msvcrt/stdio.h
+++ b/include/msvcrt/stdio.h
@@ -130,6 +130,7 @@ int    __cdecl _vsprintf_p_l(char*,size_t,const char*,_locale_t,__ms_va_list);
 size_t __cdecl _fread_nolock(void*,size_t,size_t,FILE*);
 size_t __cdecl _fwrite_nolock(const void*,size_t,size_t,FILE*);
 int    __cdecl _fclose_nolock(FILE*);
+__int64 __cdecl _ftelli64_nolock(FILE*);
 
 void   __cdecl clearerr(FILE*);
 int    __cdecl fclose(FILE*);