diff --git a/dlls/msvcrt/except.c b/dlls/msvcrt/except.c
index 3920b0e9580..ac0bb50f0fb 100644
--- a/dlls/msvcrt/except.c
+++ b/dlls/msvcrt/except.c
@@ -473,7 +473,7 @@ void CDECL __CxxUnregisterExceptionObject(cxx_frame_info *frame_info, BOOL in_us
 
 struct __std_exception_data {
     char *what;
-    bool dofree;
+    char dofree;
 };
 
 #if _MSVCR_VER>=140