diff --git a/target-mips/translate.c b/target-mips/translate.c
index ce0b4dcfe8f05b1caf0346eb2f3c08b7215a8049..9ec28eaccc516524d2104c6df0b8117d487d840b 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -2523,7 +2523,7 @@ static void gen_mtc0 (CPUState *env, DisasContext *ctx, int reg, int sel)
     case 0:
         switch (sel) {
         case 0:
-           gen_op_mtc0_index();
+            gen_op_mtc0_index();
             rn = "Index";
             break;
         case 1: