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-rw-r--r--src/stdio/vfwprintf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stdio/vfwprintf.c b/src/stdio/vfwprintf.c
index deff9828..f06d5aed 100644
--- a/src/stdio/vfwprintf.c
+++ b/src/stdio/vfwprintf.c
@@ -359,7 +359,7 @@ int vfwprintf(FILE *restrict f, const wchar_t *restrict fmt, va_list ap)
 	}
 
 	FLOCK(f);
-	f->mode |= f->mode+1;
+	fwide(f, 1);
 	olderr = f->flags & F_ERR;
 	f->flags &= ~F_ERR;
 	ret = wprintf_core(f, fmt, &ap2, nl_arg, nl_type);