diff --git a/linux-user/mips64/syscall_nr.h b/linux-user/mips64/syscall_nr.h
index 672f2fa..6579421 100644
--- a/linux-user/mips64/syscall_nr.h
+++ b/linux-user/mips64/syscall_nr.h
@@ -1,4 +1,7 @@
-#ifdef TARGET_ABI_MIPSN32
+#if defined(TARGET_ABI_MIPSO32)
+#define TARGET_SYSCALL_OFFSET 4000
+#include "syscall_o32_nr.h"
+#elif defined(TARGET_ABI_MIPSN32)
 #define TARGET_SYSCALL_OFFSET 6000
 #include "syscall_n32_nr.h"
 #else