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-rw-r--r--libs/surfaces/control_protocol/control_protocol.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/libs/surfaces/control_protocol/control_protocol.cc b/libs/surfaces/control_protocol/control_protocol.cc
index 36131e0b9e..ac244860b1 100644
--- a/libs/surfaces/control_protocol/control_protocol.cc
+++ b/libs/surfaces/control_protocol/control_protocol.cc
@@ -18,6 +18,7 @@
*/
+#include "pbd/convert.h"
#include "pbd/error.h"
#include "ardour/gain_control.h"