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-rw-r--r--gnuradio-runtime/lib/io_signature.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/io_signature.cc b/gnuradio-runtime/lib/io_signature.cc
index e5fd2bdd7d..b330e56c3b 100644
--- a/gnuradio-runtime/lib/io_signature.cc
+++ b/gnuradio-runtime/lib/io_signature.cc
@@ -13,6 +13,7 @@
#endif
#include <gnuradio/io_signature.h>
+#include <algorithm>
#include <iostream>
#include <stdexcept>