diff --git a/arch/inst/B/rori.yaml b/arch/inst/B/rori.yaml
index d6d41f042..1feba8327 100644
--- a/arch/inst/B/rori.yaml
+++ b/arch/inst/B/rori.yaml
@@ -12,7 +12,7 @@ definedBy:
 assembly: xd, xs1, shamt
 encoding:
   RV32:
-    match: 0110000----------101-----0110011
+    match: 0110000----------101-----0010011
     variables:
     - name: shamt
       location: 24-20
@@ -21,7 +21,7 @@ encoding:
     - name: rd
       location: 11-7
   RV64:
-    match: 011000-----------101-----0110011
+    match: 011000-----------101-----0010011
     variables:
     - name: shamt
       location: 25-20