diff --git a/src/arch/riscv/isa/decoder.isa b/src/arch/riscv/isa/decoder.isa
index 4a6eed2e89..be4b621a37 100644
--- a/src/arch/riscv/isa/decoder.isa
+++ b/src/arch/riscv/isa/decoder.isa
@@ -4657,7 +4657,7 @@ decode QUADRANT default Unknown::unknown() {
                                 tc->quiesce();
                             }
                         }}, IsNonSpeculative, IsQuiesce,
-                            IsSerializeAfter, No_OpClass);
+                            IsSerializeAfter, No_OpClass, IsSquashAfter);
                     }
                     0x9: sfence_vma({{
                         MISA misa = xc->readMiscReg(MISCREG_ISA);