diff --git a/ChangeLog b/ChangeLog
index 0ea75d3..fdd25b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-12-12  Niibe Yutaka  <gniibe@fsij.org>
+
+	* src/openpgp-do.c (do_openpgpcard_aid): Coerce to volatile to
+	force memory access at run time.
+
 2013-12-11  Niibe Yutaka  <gniibe@fsij.org>
 
 	* regnual/sys.c (entry): Fix relocation calculation.
@@ -33,7 +38,7 @@
 2013-11-26  Niibe Yutaka  <gniibe@fsij.org>
 
 	* src/pin-dial.c: Remove.
-	* src/configure: Remove pin-dial suppot.
+	* src/configure: Remove pin-dial support.
 
 2013-11-25  Niibe Yutaka  <gniibe@fsij.org>
 
diff --git a/src/openpgp-do.c b/src/openpgp-do.c
index 037071b..cac6bde 100644
--- a/src/openpgp-do.c
+++ b/src/openpgp-do.c
@@ -464,7 +464,8 @@ const uint8_t openpgpcard_aid[] = {
 static int
 do_openpgpcard_aid (uint16_t tag, int with_tag)
 {
-  uint16_t vid = (openpgpcard_aid[8] << 8) | openpgpcard_aid[9];
+  const volatile uint8_t *p = openpgpcard_aid;
+  uint16_t vid = (p[8] << 8) | p[9];
 
   if (with_tag)
     {