diff --git a/src/drivers/intel/gma/opregion.c b/src/drivers/intel/gma/opregion.c
index 8f1d2e6..ea05124 100644
--- a/src/drivers/intel/gma/opregion.c
+++ b/src/drivers/intel/gma/opregion.c
@@ -19,7 +19,7 @@
 	return "vbt.bin";
 }
 
-static char vbt_data[9 * KiB];
+static char vbt_data[CONFIG_VBT_DATA_SIZE_KB * KiB];
 static size_t vbt_data_sz;
 
 void *locate_vbt(size_t *vbt_size)