diff --git a/FuzzerExtFunctions.def b/FuzzerExtFunctions.def
index 39c1b77..288a59c 100644
--- a/FuzzerExtFunctions.def
+++ b/FuzzerExtFunctions.def
@@ -28,7 +28,7 @@
 EXT_FUNC(__lsan_enable, void, (), false);
 EXT_FUNC(__lsan_disable, void, (), false);
 EXT_FUNC(__lsan_do_recoverable_leak_check, int, (), false);
-EXT_FUNC(__sanitizer_acquire_crash_state, bool, (), true);
+EXT_FUNC(__sanitizer_acquire_crash_state, int, (), true);
 EXT_FUNC(__sanitizer_install_malloc_and_free_hooks, int,
          (void (*malloc_hook)(const volatile void *, size_t),
           void (*free_hook)(const volatile void *)),