diff --git a/tools/winapi/win32.api b/tools/winapi/win32.api
index 43a88f6cf15..498ca49a145 100644
--- a/tools/winapi/win32.api
+++ b/tools/winapi/win32.api
@@ -4245,6 +4245,8 @@ UUID_VECTOR *
 ULONG *
 struct IRpcChannelBuffer *
 struct IRpcStubBuffer *
+char *
+char **
 twr_t *
 twr_t **
 unsigned char *