diff --git a/grub-core/lib/reed_solomon.c b/grub-core/lib/reed_solomon.c
index 82779a296..562bd2e3e 100644
--- a/grub-core/lib/reed_solomon.c
+++ b/grub-core/lib/reed_solomon.c
@@ -102,6 +102,11 @@ static gf_single_t errvals[256];
 static gf_single_t eqstat[65536 + 256];
 #endif
 
+#if __GNUC__ == 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
+#endif
+
 static gf_single_t
 gf_mul (gf_single_t a, gf_single_t b)
 {
@@ -319,6 +324,10 @@ decode_block (gf_single_t *ptr, grub_size_t s,
     }
 }
 
+#if __GNUC__ == 12
+#pragma GCC diagnostic pop
+#endif
+
 #if !defined (STANDALONE)
 static void
 encode_block (gf_single_t *ptr, grub_size_t s,