diff --git a/bcwc_reg.h b/bcwc_reg.h
index 3bcf648..1912dd9 100644
--- a/bcwc_reg.h
+++ b/bcwc_reg.h
@@ -151,11 +151,11 @@
 /* On iomem with pointer at 0x0ff0 (Bar 4: 1MB) */
 #define ISP_IPC_NUM_CHAN	0xc3000
 #define ISP_IPC_QUEUE_SIZE	0xc3004
-#define ISP_REG_C3008		0xc3008
+#define ISP_FW_SIZE		0xc3008
 #define ISP_FW_HEAP_SIZE	0xc300c
-#define ISP_REG_C3010		0xc3010
-#define ISP_REG_C3014		0xc3014
-#define ISP_REG_C3018		0xc3018
+#define ISP_FW_HEAP_ADDR	0xc3010
+#define ISP_FW_HEAP_SIZE2	0xc3014
+#define ISP_REG_C3018		0xc3018 /* Module params or cmd buf? */
 #define ISP_REG_C301C		0xc301c
 #define ISP_REG_40004		0x40004
 #define ISP_REG_40008		0x40008