diff --git a/toys.h b/toys.h
index 1441c55..e78aea5 100644
--- a/toys.h
+++ b/toys.h
@@ -52,6 +52,7 @@
 	char **argv;             // Original command line arguments
 	unsigned optflags;       // Command line option flags from get_optflags()
 	char **optargs;          // Arguments left over from get_optflags()
+	int exithelp;            // Should error_exit print a usage message first?  (Option parsing.)
 } toys;
 
 // One big temporary buffer, for use by applets (not library functions).