diff --git a/src/isa/riscv64/exec/special.c b/src/isa/riscv64/exec/special.c
index 6ee53a1f380e23b68887204207a2c070cdf95010..94998c70490589234764eb1aa28ae4ee157dfd78 100644
--- a/src/isa/riscv64/exec/special.c
+++ b/src/isa/riscv64/exec/special.c
@@ -28,4 +28,6 @@ make_EHelper(nemu_trap) {
   return;
 }
 
-make_EHelper(fence) { }
+make_EHelper(fence) {
+  difftest_skip_dut(1, 2);
+}