diff --git a/src/abi/mips/l4_types-mips.cpp b/src/abi/mips/l4_types-mips.cpp
index d9f3d2b..a3000f9 100644
--- a/src/abi/mips/l4_types-mips.cpp
+++ b/src/abi/mips/l4_types-mips.cpp
@@ -3,5 +3,5 @@
 EXTENSION class L4_exception_ipc
 {
 public:
-  enum { Msg_size = 38 };
+  enum { Msg_size = 41 };
 };