diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 399a8ac8dd844de9dc53848950558a2d048976f4..109997684a78aabe41cec47bec6b5645d71862bb 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -3298,7 +3298,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
 
                 rs1 = GET_FIELD_SP(insn, 14, 18);
                 if (IS_IMM) {
-                    rs2 = GET_FIELD_SP(insn, 0, 6);
+                    rs2 = GET_FIELD_SP(insn, 0, 7);
                     if (rs1 == 0) {
                         tcg_gen_movi_i32(trap, (rs2 & mask) + TT_TRAP);
                         /* Signal that the trap value is fully constant.  */