diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 280d1886266..6a36661de48 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -840,7 +840,7 @@
 @ stub _freefls
 @ varargs _fscanf_l(ptr str ptr) MSVCRT__fscanf_l
 @ varargs _fscanf_s_l(ptr str ptr) MSVCRT__fscanf_s_l
-@ stub _fseek_nolock
+@ cdecl _fseek_nolock(ptr long long) MSVCRT__fseek_nolock
 @ cdecl _fseeki64(ptr int64 long) MSVCRT__fseeki64
 @ cdecl _fseeki64_nolock(ptr int64 long) MSVCRT__fseeki64_nolock
 @ cdecl _fsopen(str str long) MSVCRT__fsopen
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index 5b74e9ccfef..d6b1a1824c4 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -1188,7 +1188,7 @@
 @ stub _freefls
 @ varargs _fscanf_l(ptr str ptr) MSVCRT__fscanf_l
 @ varargs _fscanf_s_l(ptr str ptr) MSVCRT__fscanf_s_l
-@ stub _fseek_nolock
+@ cdecl _fseek_nolock(ptr long long) MSVCRT__fseek_nolock
 @ cdecl _fseeki64(ptr int64 long) MSVCRT__fseeki64
 @ cdecl _fseeki64_nolock(ptr int64 long) MSVCRT__fseeki64_nolock
 @ cdecl _fsopen(str str long) MSVCRT__fsopen
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index 9d695cd39b8..237539bb29b 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -507,7 +507,7 @@
 @ stub _freefls
 @ varargs _fscanf_l(ptr str ptr) MSVCRT__fscanf_l
 @ varargs _fscanf_s_l(ptr str ptr) MSVCRT__fscanf_s_l
-@ stub _fseek_nolock
+@ cdecl _fseek_nolock(ptr long long) MSVCRT__fseek_nolock
 @ cdecl _fseeki64(ptr int64 long) MSVCRT__fseeki64
 @ cdecl _fseeki64_nolock(ptr int64 long) MSVCRT__fseeki64_nolock
 @ cdecl _fsopen(str str long) MSVCRT__fsopen
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 45ea0f98a9c..b810c5fbbcb 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -489,7 +489,7 @@
 @ stub _freefls
 @ varargs _fscanf_l(ptr str ptr) MSVCRT__fscanf_l
 @ varargs _fscanf_s_l(ptr str ptr) MSVCRT__fscanf_s_l
-@ stub _fseek_nolock
+@ cdecl _fseek_nolock(ptr long long) MSVCRT__fseek_nolock
 @ cdecl _fseeki64(ptr int64 long) MSVCRT__fseeki64
 @ cdecl _fseeki64_nolock(ptr int64 long) MSVCRT__fseeki64_nolock
 @ cdecl _fsopen(str str long) MSVCRT__fsopen
diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index 9f7da57ce9f..2dd4da5e8d1 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -1293,6 +1293,14 @@ int CDECL MSVCRT_fseek(MSVCRT_FILE* file, MSVCRT_long offset, int whence)
     return MSVCRT__fseeki64( file, offset, whence );
 }
 
+/*********************************************************************
+ *		_fseek_nolock (MSVCRT.@)
+ */
+int CDECL MSVCRT__fseek_nolock(MSVCRT_FILE* file, MSVCRT_long offset, int whence)
+{
+    return MSVCRT__fseeki64_nolock( file, offset, whence );
+}
+
 /*********************************************************************
  *		_chsize_s (MSVCRT.@)
  */
diff --git a/include/msvcrt/stdio.h b/include/msvcrt/stdio.h
index 1e816cec33e..1c154fcedd5 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*);
+int    __cdecl _fseek_nolock(FILE*,__msvcrt_long,int);
 int    __cdecl _fseeki64_nolock(FILE*,__int64,int);
 __msvcrt_long __cdecl _ftell_nolock(FILE*);
 __int64 __cdecl _ftelli64_nolock(FILE*);