diff --git a/arch/mips.c b/arch/mips.c
index 1fc42dd..51881b6 100644
--- a/arch/mips.c
+++ b/arch/mips.c
@@ -34,7 +34,7 @@ intptr_t read(int32_t fd, const void* buf, intptr_t size){
     "move $a0, %1\n"
     "move $a1, %2\n"
     "move $a2, %3\n"
-    "li $v0, 4004\n"
+    "li $v0, 4003\n"
     "syscall\n"
     "move %0, $v0\n"
     : "=r"(n_read)