diff --git a/riscv/riscv64zb.bin_fmt b/riscv/riscv64zb.bin_fmt
index f1612d7..9c5efcb 100644
--- a/riscv/riscv64zb.bin_fmt
+++ b/riscv/riscv64zb.bin_fmt
@@ -32,8 +32,8 @@
 }
 
 instruction group RiscVZbsImmInst64[32] : Inst32Format {
-  bclri : RSType : func6 == 0b010'010, func3 == 0b001, opcode == 0b001'1011;
-  bexti : RSType : func6 == 0b010'010, func3 == 0b101, opcode == 0b001'1011;
-  binvi : RSType : func6 == 0b011'010, func3 == 0b001, opcode == 0b001'1011;
-  bseti : RSType : func6 == 0b001'010, func3 == 0b001, opcode == 0b001'1011;
+  bclri : RSType : func6 == 0b010'010, func3 == 0b001, opcode == 0b001'0011;
+  bexti : RSType : func6 == 0b010'010, func3 == 0b101, opcode == 0b001'0011;
+  binvi : RSType : func6 == 0b011'010, func3 == 0b001, opcode == 0b001'0011;
+  bseti : RSType : func6 == 0b001'010, func3 == 0b001, opcode == 0b001'0011;
 }