diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 5cf1c3f04b..b828375714 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -1735,7 +1735,6 @@ target_ulong helper_evpe(CPUMIPSState *env)
 void helper_fork(target_ulong arg1, target_ulong arg2)
 {
     // arg1 = rt, arg2 = rs
-    arg1 = 0;
     // TODO: store to TC register
 }