diff --git a/ChangeLog b/ChangeLog
index 3b2620509..cdeb6b604 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2017-09-08  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>
+
+	[base] Remove a check for resource ID in the resource fork driver.
+
+	LastResort.dfont has a marginal resource ID 0xFFFF for sfnt
+	resource.  Inside Macintosh: More Macintosh Toolbox, `Resource IDs'
+	(1-46), tells that some IDs are reserved and should not be used.
+	FreeType2 just uses resource ID to sort the fragmented resource.
+	To accept the marginal fonts, the checking is removed.
+
+	* src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Remove res_id
+	validity check, fix a trace message format.
+
 2017-09-08  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>
 
 	[sfnt, truetype] Register the tags for marginal fonts.
diff --git a/src/base/ftrfork.c b/src/base/ftrfork.c
index f7b81375d..f5ad2874d 100644
--- a/src/base/ftrfork.c
+++ b/src/base/ftrfork.c
@@ -271,7 +271,13 @@
           if ( FT_STREAM_SKIP( 4 ) )  /* mbz */
             goto Exit;
 
-          if ( ref[j].res_id < 0 || temp < 0 )
+          /*
+           * According to Inside Macintosh: More Macintosh Toolbox,
+           * "Resource IDs" (1-46), there are some reserved IDs.
+           * However, FreeType2 is not a font synthesizer, no need
+           * to check the acceptable resource ID.
+           */
+          if ( temp < 0 )
           {
             error = FT_THROW( Invalid_Table );
             goto Exit;
@@ -281,7 +287,7 @@
 
           FT_TRACE3(( "             [%d]:"
                       " resource_id=0x%04x, offset=0x%08x\n",
-                      j, ref[j].res_id, ref[j].offset ));
+                      j, (FT_UShort)ref[j].res_id, ref[j].offset ));
         }
 
         if ( sort_by_res_id )