diff --git a/ChangeLog b/ChangeLog
index 0780a3691..fd7add031 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-12-13  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/normal/datetime.c (grub_weekday_names): Make const.
+
 2011-12-13  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/fs/udf.c (read_string): Macroify GRUB_MAX_UTF8_PER_UTF16.
diff --git a/grub-core/normal/datetime.c b/grub-core/normal/datetime.c
index 8183601ba..bbc2cdea9 100644
--- a/grub-core/normal/datetime.c
+++ b/grub-core/normal/datetime.c
@@ -20,7 +20,7 @@
 #include <grub/datetime.h>
 #include <grub/i18n.h>
 
-static const char *grub_weekday_names[] =
+static const char *const grub_weekday_names[] =
 {
   N_("Sunday"),
   N_("Monday"),