diff --git a/arch/arm/src/samv7/sam_mcan.c b/arch/arm/src/samv7/sam_mcan.c
index fa26c0dc68..f1f8f788a2 100644
--- a/arch/arm/src/samv7/sam_mcan.c
+++ b/arch/arm/src/samv7/sam_mcan.c
@@ -259,7 +259,7 @@
 
 #  define MCAN0_RXFIFO1_BYTES \
      MCAN_ALIGN_UP(CONFIG_SAMV7_MCAN0_RXFIFO1_SIZE * \
-                   MCAN1_RXFIFO1_ELEMENT_SIZE + 8)
+                   MCAN0_RXFIFO1_ELEMENT_SIZE + 8)
 #  define MCAN0_RXFIFO1_WORDS (MCAN0_RXFIFO1_BYTES >> 2)
 
 /* MCAN0 Filters */