diff --git a/arch/arm/src/samv7/sam_mcan.c b/arch/arm/src/samv7/sam_mcan.c
index fd5aabd6ead..247e83bb099 100644
--- a/arch/arm/src/samv7/sam_mcan.c
+++ b/arch/arm/src/samv7/sam_mcan.c
@@ -202,7 +202,7 @@
 
 #  define MCAN0_RXFIFO0_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_RXFIFO0_SIZE * \
-                   MCAN0_RXFIFO0_ELEMENT_SIZE + 8)
+                   (MCAN0_RXFIFO0_ELEMENT_SIZE + 8))
 #  define MCAN0_RXFIFO0_WORDS (MCAN0_RXFIFO0_BYTES >> 2)
 
 /* MCAN0 RX FIFO1 element size */
@@ -245,7 +245,7 @@
 
 #  define MCAN0_RXFIFO1_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_RXFIFO1_SIZE * \
-                   MCAN0_RXFIFO1_ELEMENT_SIZE + 8)
+                   (MCAN0_RXFIFO1_ELEMENT_SIZE + 8))
 #  define MCAN0_RXFIFO1_WORDS (MCAN0_RXFIFO1_BYTES >> 2)
 
 /* MCAN0 Filters */
@@ -314,7 +314,7 @@
 
 #  define MCAN0_DEDICATED_RXBUFFER_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_DEDICATED_RXBUFFER_SIZE * \
-                   MCAN0_RXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN0_RXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN0_DEDICATED_RXBUFFER_WORDS \
      (MCAN0_DEDICATED_RXBUFFER_BYTES >> 2)
 
@@ -354,7 +354,7 @@
 
 #  define MCAN0_DEDICATED_TXBUFFER_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_DEDICATED_TXBUFFER_SIZE * \
-                   MCAN0_TXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN0_TXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN0_DEDICATED_TXBUFFER_WORDS \
      (MCAN0_DEDICATED_TXBUFFER_BYTES >> 2)
 
@@ -384,7 +384,7 @@
 
 #  define MCAN0_TXFIFIOQ_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_TXFIFOQ_SIZE *  \
-                   MCAN0_TXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN0_TXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN0_TXFIFIOQ_WORDS (MCAN0_TXFIFIOQ_BYTES >> 2)
 
 /* MCAN0 Message RAM */
@@ -487,7 +487,7 @@
 
 #  define MCAN1_RXFIFO0_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN1_RXFIFO0_SIZE * \
-                   MCAN1_RXFIFO0_ELEMENT_SIZE + 8)
+                   (MCAN1_RXFIFO0_ELEMENT_SIZE + 8))
 #  define MCAN1_RXFIFO0_WORDS (MCAN1_RXFIFO0_BYTES >> 2)
 
 /* MCAN1 RX FIFO1 element size */
@@ -530,7 +530,7 @@
 
 #  define MCAN1_RXFIFO1_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN1_RXFIFO1_SIZE * \
-                   MCAN1_RXFIFO1_ELEMENT_SIZE + 8)
+                   (MCAN1_RXFIFO1_ELEMENT_SIZE + 8))
 #  define MCAN1_RXFIFO1_WORDS (MCAN1_RXFIFO1_BYTES >> 2)
 
 /* MCAN1 Filters */
@@ -599,7 +599,7 @@
 
 #  define MCAN1_DEDICATED_RXBUFFER_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN1_DEDICATED_RXBUFFER_SIZE * \
-                   MCAN1_RXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN1_RXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN1_DEDICATED_RXBUFFER_WORDS \
      (MCAN1_DEDICATED_RXBUFFER_BYTES >> 2)
 
@@ -639,7 +639,7 @@
 
 #  define MCAN1_DEDICATED_TXBUFFER_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN1_DEDICATED_TXBUFFER_SIZE * \
-                   MCAN1_TXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN1_TXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN1_DEDICATED_TXBUFFER_WORDS \
      (MCAN1_DEDICATED_TXBUFFER_BYTES >> 2)
 
@@ -669,7 +669,7 @@
 
 #  define MCAN1_TXFIFIOQ_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN1_TXFIFOQ_SIZE *  \
-                   MCAN1_TXBUFFER_ELEMENT_SIZE + 8)
+                   (MCAN1_TXBUFFER_ELEMENT_SIZE + 8))
 #  define MCAN1_TXFIFIOQ_WORDS (MCAN1_TXFIFIOQ_BYTES >> 2)
 
 /* MCAN1 Message RAM */