diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 9b7005e1345e1a2b0f76ddc8e429a070d4c65790..e5a69679cfa2a0ca4d60b4e18788db21a849ec66 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -69,7 +69,6 @@
 
 #include "mailbox.h"
 
-#define MAX_PCC_SUBSPACES	256
 #define MBOX_IRQ_NAME		"pcc-mbox"
 
 static struct mbox_chan *pcc_mbox_channels;
diff --git a/include/acpi/pcc.h b/include/acpi/pcc.h
index 8caa79c617035e60a41ee850150d2b472f35df5a..cd6ef45e614ea8131b8c0e1c50518d67b36a0d4e 100644
--- a/include/acpi/pcc.h
+++ b/include/acpi/pcc.h
@@ -13,6 +13,7 @@
 #include <linux/mailbox_controller.h>
 #include <linux/mailbox_client.h>
 
+#define MAX_PCC_SUBSPACES	256
 #ifdef CONFIG_PCC
 extern struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
 						  int subspace_id);