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-rw-r--r--gtk2_ardour/canvas-waveview.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/canvas-waveview.c b/gtk2_ardour/canvas-waveview.c
index 193b3cd68a..db95732b16 100644
--- a/gtk2_ardour/canvas-waveview.c
+++ b/gtk2_ardour/canvas-waveview.c
@@ -24,6 +24,7 @@
#include <cairo.h>
#include <string.h>
#include <limits.h>
+#include <unistd.h>
#include "ardour/dB.h"