diff --git a/dlls/fontsub/fontsub.spec b/dlls/fontsub/fontsub.spec
index dfb47fbb218..61b7fd397ce 100644
--- a/dlls/fontsub/fontsub.spec
+++ b/dlls/fontsub/fontsub.spec
@@ -1,2 +1,2 @@
-@ stub CreateFontPackage
+@ cdecl CreateFontPackage(ptr long ptr ptr ptr long long long long long long ptr long ptr ptr ptr ptr)
 @ stub MergeFontPackage
diff --git a/dlls/fontsub/main.c b/dlls/fontsub/main.c
index 515c2d31140..b78bd58a2de 100644
--- a/dlls/fontsub/main.c
+++ b/dlls/fontsub/main.c
@@ -19,6 +19,7 @@
 #include <stdarg.h>
 #include "windef.h"
 #include "winbase.h"
+#include "fontsub.h"
 
 #include "wine/debug.h"
 
@@ -38,3 +39,16 @@ BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 
     return TRUE;
 }
+
+ULONG __cdecl CreateFontPackage(const unsigned char *src, const ULONG src_len, unsigned char **dest,
+    ULONG *dest_len, ULONG *written, const unsigned short flags, const unsigned short face_index,
+    const unsigned short format, const unsigned short lang, const unsigned short platform, const unsigned short encoding,
+    const unsigned short *keep_list, const unsigned short keep_len, CFP_ALLOCPROC allocproc,
+    CFP_REALLOCPROC reallocproc, CFP_FREEPROC freeproc, void *reserved)
+{
+    FIXME("(%p %u %p %p %p %#x %u %u %u %u %u %p %u %p %p %p %p): stub\n", src, src_len, dest, dest_len,
+        written, flags, face_index, format, lang, platform, encoding, keep_list, keep_len, allocproc,
+        reallocproc, freeproc, reserved);
+
+    return ERR_GENERIC;
+}
diff --git a/include/Makefile.in b/include/Makefile.in
index 8283616102c..6e9803c67b8 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -355,6 +355,7 @@ HEADER_SRCS = \
 	fdi.h \
 	fileapi.h \
 	fltdefs.h \
+	fontsub.h \
 	gdiplus.h \
 	gdipluscolor.h \
 	gdipluscolormatrix.h \
diff --git a/include/fontsub.h b/include/fontsub.h
new file mode 100644
index 00000000000..6fc7793a641
--- /dev/null
+++ b/include/fontsub.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2016 Nikolay Sivov for CodeWeavers
+ *
+ * This 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __WINE_FONTSUB_H
+#define __WINE_FONTSUB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void *(__cdecl *CFP_ALLOCPROC)(size_t);
+typedef void *(__cdecl *CFP_REALLOCPROC)(void *, size_t);
+typedef void (__cdecl *CFP_FREEPROC)(void *);
+
+ULONG __cdecl CreateFontPackage(const unsigned char *src, const ULONG src_len, unsigned char **dest,
+    ULONG *dest_len, ULONG *written, const unsigned short flags, const unsigned short face_index,
+    const unsigned short format, const unsigned short lang, const unsigned short platform,
+    const unsigned short encoding, const unsigned short *keep_list, const unsigned short keep_len,
+    CFP_ALLOCPROC allocproc, CFP_REALLOCPROC reallocproc, CFP_FREEPROC freeproc, void *reserved);
+
+#define ERR_GENERIC 1000
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif