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-rw-r--r--libguile/vports.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libguile/vports.c b/libguile/vports.c
index 22ba06c16..b10190268 100644
--- a/libguile/vports.c
+++ b/libguile/vports.c
@@ -28,6 +28,7 @@
#include <errno.h>
#include "libguile/_scm.h"
+#include "libguile/boolean.h"
#include "libguile/eval.h"
#include "libguile/chars.h"
#include "libguile/ports.h"