diff --git a/fc-arch/fc-arch.c b/fc-arch/fc-arch.c
index 2fa6b18..d0f5192 100644
--- a/fc-arch/fc-arch.c
+++ b/fc-arch/fc-arch.c
@@ -25,7 +25,7 @@
 #include <ctype.h>
 
 #define ENDIAN_TEST 0x12345678
-#define MACHINE_SIGNATURE_SIZE (9*21 + 1)
+#define MACHINE_SIGNATURE_SIZE (9*22 + 1)
 
 static char *
 FcCacheMachineSignature (void)
@@ -36,8 +36,9 @@ FcCacheMachineSignature (void)
 
     sprintf (buf, "%2x%2x%2x%2x_"
 	     "%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_"
-	     "%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x",
+	     "%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x",
 	     m[0], m[1], m[2], m[3],
+	     (unsigned int)sizeof (FcAlign),
 	     (unsigned int)sizeof (char),
 	     (unsigned int)sizeof (char *),
 	     (unsigned int)sizeof (int),
diff --git a/fc-arch/fcarch.tmpl.h b/fc-arch/fcarch.tmpl.h
index 20e5705..aac3bcf 100644
--- a/fc-arch/fcarch.tmpl.h
+++ b/fc-arch/fcarch.tmpl.h
@@ -28,11 +28,11 @@
 @@@ name. Architecture names are used to construct file names, so
 @@@ use something reasonable and don't include any spaces
 @@@
-@@@ name    endian   char     char*    int      intptr_t Pattern  EltPtr   Elt *    Elt      ObjPtr   VLPtr    Value    Binding  VL *     CharSet  Leaf**   Char16 * Char16   Leaf     Char32   Cache
-x86	    78563412_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_0000000c_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
-x86-64	    78563412_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038
-ppc	    12345678_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_00000010_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
-ppc64	    12345678_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038
-m68k	    12345678_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_0000000c_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
-mipsel	    78563412_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_00000010_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
-sparc64     12345678_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038
+@@@ name    endian   FcAlign  char     char*    int      intptr_t Pattern  EltPtr   Elt *    Elt      ObjPtr   VLPtr    Value    Binding  VL *     CharSet  Leaf**   Char16 * Char16   Leaf     Char32   Cache
+x86	    78563412_00000008_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_0000000c_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
+x86-64	    78563412_00000008_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038
+ppc	    12345678_00000008_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_00000010_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
+ppc64	    12345678_00000008_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038
+m68k	    12345678_00000008_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_0000000c_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
+mipsel	    78563412_00000008_00000001_00000004_00000004_00000004_00000010_00000004_00000004_00000008_00000004_00000004_00000010_00000004_00000004_00000010_00000004_00000004_00000002_00000020_00000004_00000020
+sparc64     12345678_00000008_00000001_00000008_00000004_00000008_00000018_00000008_00000008_00000010_00000004_00000008_00000010_00000004_00000008_00000018_00000008_00000008_00000002_00000020_00000004_00000038