diff --git a/target-openrisc/translate.c b/target-openrisc/translate.c
index 7dea405c69..b90181dc70 100644
--- a/target-openrisc/translate.c
+++ b/target-openrisc/translate.c
@@ -1320,7 +1320,7 @@ static void dec_sys(DisasContext *dc, uint32_t insn)
 #ifdef OPENRISC_DISAS
     uint32_t K16;
 #endif
-    op0 = extract32(insn, 16, 8);
+    op0 = extract32(insn, 16, 10);
 #ifdef OPENRISC_DISAS
     K16 = extract32(insn, 0, 16);
 #endif