diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f177fa3e6d..511d18df64 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2013-02-13  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+
+	* aarch64-linux-nat.c (dr_changed_t): ARI fix: Replace long long
+	with LONGEST.
+
 2013-02-13  Pedro Alves  <palves@redhat.com>
 	    Hafiz Abid Qadeer  <abidh@codesourcery.com>
 
diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c
index 82fca0e86c..268f98d31f 100644
--- a/gdb/aarch64-linux-nat.c
+++ b/gdb/aarch64-linux-nat.c
@@ -143,7 +143,7 @@ static int debug_hw_points;
    ptrace calls to the kernel, i.e. avoid asking the kernel to write
    to the debug registers with unchanged values.  */
 
-typedef unsigned long long dr_changed_t;
+typedef unsigned LONGEST dr_changed_t;
 
 /* Set each of the lower M bits of X to 1; assert X is wide enough.  */