diff --git a/arch/powerpc/xmon/ppc-dis.c b/arch/powerpc/xmon/ppc-dis.c
index 31db8c072acd03b80dcf177c842273d508409d0a..9deea5ee13f652cd6c8a8b7f1f7d58a9229f31ae 100644
--- a/arch/powerpc/xmon/ppc-dis.c
+++ b/arch/powerpc/xmon/ppc-dis.c
@@ -93,10 +93,6 @@ lookup_powerpc (unsigned long insn, ppc_cpu_t dialect)
 {
   const struct powerpc_opcode *opcode;
   const struct powerpc_opcode *opcode_end;
-  unsigned long op;
-
-  /* Get the major opcode of the instruction.  */
-  op = PPC_OP (insn);
 
   opcode_end = powerpc_opcodes + powerpc_num_opcodes;
   /* Find the first match in the opcode table for this major opcode.  */