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-rw-r--r--lib/argmatch.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/argmatch.c b/lib/argmatch.c
index ffc638c27..e7c2575c0 100644
--- a/lib/argmatch.c
+++ b/lib/argmatch.c
@@ -39,7 +39,10 @@
#include "exit.h"
#include "quotearg.h"
#include "quote.h"
-#include "unlocked-io.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
/* When reporting an invalid argument, show nonprinting characters
by using the quoting style ARGMATCH_QUOTING_STYLE. Do not use