diff --git a/shared/context_struct.h b/shared/context_struct.h
index 41a49e8..ae6ffeb 100644
--- a/shared/context_struct.h
+++ b/shared/context_struct.h
@@ -4,6 +4,10 @@ typedef struct {
     uintptr_t rip, rsp, rbp;
 } unwind_context_t;
 
-typedef unwind_context_t (*_fde_func_t)(unwind_context_t, uintptr_t);
-
 typedef uintptr_t (*deref_func_t)(uintptr_t);
+
+typedef unwind_context_t (*_fde_func_t)(unwind_context_t, uintptr_t);
+typedef unwind_context_t (*_fde_func_with_deref_t)(
+        unwind_context_t,
+        uintptr_t,
+        deref_func_t);