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-rw-r--r--gr-trellis/src/lib/trellis.i1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-trellis/src/lib/trellis.i b/gr-trellis/src/lib/trellis.i
index bd3144119..2db07ed1d 100644
--- a/gr-trellis/src/lib/trellis.i
+++ b/gr-trellis/src/lib/trellis.i
@@ -8,6 +8,7 @@
%{
#include "gnuradio_swig_bug_workaround.h" // mandatory bug fix
#include "fsm.h"
+#include "quicksort_index.h"
#include "interleaver.h"
#include "trellis_permutation.h"
#include <stdexcept>