diff --git a/tests/riscof/spike/spike_rv64gc_isa.yaml b/tests/riscof/spike/spike_rv64gc_isa.yaml
index f7e6b8c73..b8fabebde 100644
--- a/tests/riscof/spike/spike_rv64gc_isa.yaml
+++ b/tests/riscof/spike/spike_rv64gc_isa.yaml
@@ -27,7 +27,7 @@ hart0:
            warl:
               dependency_fields: []
               legal:
-                - extensions[25:0] bitmask [0x014112D, 0x0000000]
+                - extensions[25:0] bitmask [0x015112D, 0x0000000]
               wr_illegal:
                 - Unchanged