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-rw-r--r--gr-digital/lib/symbol_sync_cc_impl.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-digital/lib/symbol_sync_cc_impl.cc b/gr-digital/lib/symbol_sync_cc_impl.cc
index 15b710ac97..498960a999 100644
--- a/gr-digital/lib/symbol_sync_cc_impl.cc
+++ b/gr-digital/lib/symbol_sync_cc_impl.cc
@@ -16,6 +16,7 @@
#include <gnuradio/integer_math.h>
#include <gnuradio/io_signature.h>
#include <gnuradio/math.h>
+#include <boost/format.hpp>
#include <stdexcept>
namespace gr {