diff --git a/video/readers/png.c b/video/readers/png.c
index 608fa5e..9dac4b6 100644
--- a/video/readers/png.c
+++ b/video/readers/png.c
@@ -68,7 +68,7 @@
 #define DEFLATE_HCLEN_BASE	4
 #define DEFLATE_HCLEN_MAX	19
 #define DEFLATE_HLIT_BASE	257
-#define DEFLATE_HLIT_MAX	286
+#define DEFLATE_HLIT_MAX	288
 #define DEFLATE_HDIST_BASE	1
 #define DEFLATE_HDIST_MAX	30
 
@@ -391,6 +391,41 @@ grub_png_get_huff_code (struct grub_png_data *data, struct huff_table *ht)
 }
 
 static grub_err_t
+grub_png_init_fixed_block (struct grub_png_data *data)
+{
+  int i;
+
+  grub_png_init_huff_table (&data->code_table, DEFLATE_HUFF_LEN,
+			    data->code_values, data->code_maxval,
+			    data->code_offset);
+
+  for (i = 0; i < 144; i++)
+    grub_png_insert_huff_item (&data->code_table, i, 8);
+
+  for (; i < 256; i++)
+    grub_png_insert_huff_item (&data->code_table, i, 9);
+
+  for (; i < 280; i++)
+    grub_png_insert_huff_item (&data->code_table, i, 7);
+
+  for (; i < DEFLATE_HLIT_MAX; i++)
+    grub_png_insert_huff_item (&data->code_table, i, 8);
+
+  grub_png_build_huff_table (&data->code_table);
+
+  grub_png_init_huff_table (&data->dist_table, DEFLATE_HUFF_LEN,
+			    data->dist_values, data->dist_maxval,
+			    data->dist_offset);
+
+  for (i = 0; i < DEFLATE_HDIST_MAX; i++)
+    grub_png_insert_huff_item (&data->dist_table, i, 5);
+
+  grub_png_build_huff_table (&data->dist_table);
+
+  return grub_errno;
+}
+
+static grub_err_t
 grub_png_init_dynamic_block (struct grub_png_data *data)
 {
   int nl, nd, nb, i, prev;
@@ -699,8 +734,9 @@ grub_png_decode_image_data (struct grub_png_data *data)
 	  }
 
 	case INFLATE_FIXED:
-	  return grub_error (GRUB_ERR_BAD_FILE_TYPE,
-			     "png: block type fixed not supported");
+          grub_png_init_fixed_block (data);
+	  grub_png_read_dynamic_block (data);
+	  break;
 
 	case INFLATE_DYNAMIC:
 	  grub_png_init_dynamic_block (data);