diff --git a/drivers/staging/wlags49_h2/hcf.c b/drivers/staging/wlags49_h2/hcf.c
index 390628c6c1ebe900c1e46586a080e92418da6475..c4fe0ec95074b3cc668fb0713b7de277730d4828 100644
--- a/drivers/staging/wlags49_h2/hcf.c
+++ b/drivers/staging/wlags49_h2/hcf.c
@@ -502,7 +502,7 @@ HCF_STATIC hcf_16* BASED xxxx[ ] = {
 #endif // MSF_COMPONENT_ID
 	NULL									//endsentinel
   };
-#define xxxx_PRI_IDENTITY_OFFSET	(sizeof(xxxx)/sizeof(xxxx[0]) - 3)
+#define xxxx_PRI_IDENTITY_OFFSET	(ARRAY_SIZE(xxxx) - 3)
 
 #endif // MSF_COMPONENT_ID / HCF_EXT_MB