diff --git a/src/zcash/Zcash.h b/src/zcash/Zcash.h
index 831003bc3..bac4ad8f2 100644
--- a/src/zcash/Zcash.h
+++ b/src/zcash/Zcash.h
@@ -12,7 +12,7 @@
 #define ZC_R_SIZE 32
 #define ZC_MEMO_SIZE 512
 
-#define ZC_NOTEPLAINTEXT_SIZE ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE
+#define ZC_NOTEPLAINTEXT_SIZE (ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE)
 
 #define ZKSNARK_PROOF_SIZE 584