diff --git a/src/internal/cpu/cpu_riscv64.go b/src/internal/cpu/cpu_riscv64.go
index 54b8c3378b4..2173fe88860 100644
--- a/src/internal/cpu/cpu_riscv64.go
+++ b/src/internal/cpu/cpu_riscv64.go
@@ -4,7 +4,7 @@
 
 package cpu
 
-const CacheLinePadSize = 32
+const CacheLinePadSize = 64
 
 func doinit() {
 }