diff --git a/ChangeLog b/ChangeLog
index 70f0c86ae..66a0245bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-09-05  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/script/yylex.l: Ignore unused-function and sign-compare
+	warnings.
+
 2012-09-05  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/partmap/dvh.c (grub_dvh_is_valid): Add missing byteswap.
diff --git a/grub-core/script/yylex.l b/grub-core/script/yylex.l
index f6a39c54b..8fdcfef67 100644
--- a/grub-core/script/yylex.l
+++ b/grub-core/script/yylex.l
@@ -29,6 +29,8 @@
 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
 #pragma GCC diagnostic ignored "-Wmissing-declarations"
 #pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"
+#pragma GCC diagnostic ignored "-Wunused-function"
+#pragma GCC diagnostic ignored "-Wsign-compare"
 
 #define yyfree    grub_lexer_yyfree
 #define yyalloc   grub_lexer_yyalloc