diff --git a/kernel/busses/dmi_scan.c b/kernel/busses/dmi_scan.c
index 1cb24344..7a367202 100644
--- a/kernel/busses/dmi_scan.c
+++ b/kernel/busses/dmi_scan.c
@@ -18,6 +18,11 @@
 #include "version.h"
 #include "dmi_scan.h"
 
+/* for 2.2 kernels */
+#ifndef isa_memcpy_fromio
+#define isa_memcpy_fromio(a,b,c)        memcpy_fromio((a),(b),(c))
+#endif
+
 struct dmi_header
 {
 	u8	type;