diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index cd6332b..29dd558 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -14,7 +14,7 @@
 #include <linux/mod_devicetable.h>
 
 #define PNP_MAX_PORT		40
-#define PNP_MAX_MEM		12
+#define PNP_MAX_MEM		24
 #define PNP_MAX_IRQ		2
 #define PNP_MAX_DMA		2
 #define PNP_NAME_LEN		50