diff --git a/target/nios2/nios2-semi.c b/target/nios2/nios2-semi.c
index f76e8588c5..29ac27035e 100644
--- a/target/nios2/nios2-semi.c
+++ b/target/nios2/nios2-semi.c
@@ -132,8 +132,8 @@ void do_nios2_semihosting(CPUNios2State *env)
     args = env->regs[R_ARG1];
     switch (nr) {
     case HOSTED_EXIT:
-        gdb_exit(env->regs[R_ARG0]);
-        exit(env->regs[R_ARG0]);
+        gdb_exit(env->regs[R_ARG1]);
+        exit(env->regs[R_ARG1]);
 
     case HOSTED_OPEN:
         GET_ARG(0);