diff --git a/include/drivers/arm/tzc_common.h b/include/drivers/arm/tzc_common.h
index 9411b73..bb64b00 100644
--- a/include/drivers/arm/tzc_common.h
+++ b/include/drivers/arm/tzc_common.h
@@ -46,10 +46,10 @@
 
 /* Macros for allowing Non-Secure access to a region based on NSAID */
 #define TZC_REGION_ACCESS_RD(nsaid)				\
-	((1 << (nsaid & TZC_REGION_ACCESS_ID_MASK)) <<		\
+	((1 << ((nsaid) & TZC_REGION_ACCESS_ID_MASK)) <<	\
 	 TZC_REGION_ACCESS_RD_EN_SHIFT)
 #define TZC_REGION_ACCESS_WR(nsaid)				\
-	((1 << (nsaid & TZC_REGION_ACCESS_ID_MASK)) <<		\
+	((1 << ((nsaid) & TZC_REGION_ACCESS_ID_MASK)) <<	\
 	 TZC_REGION_ACCESS_WR_EN_SHIFT)
 #define TZC_REGION_ACCESS_RDWR(nsaid)				\
 	(TZC_REGION_ACCESS_RD(nsaid) |				\