diff --git a/dmi.c b/dmi.c
index c44221c..7488d61 100644
--- a/dmi.c
+++ b/dmi.c
@@ -164,7 +164,7 @@
 	unsigned int i = 0, j = 0;
 
 	uint8_t *dmi_table_mem = physmap_ro("DMI Table", base, len);
-	if (dmi_table_mem == NULL) {
+	if (dmi_table_mem == ERROR_PTR) {
 		msg_perr("Unable to access DMI Table\n");
 		return;
 	}