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-rw-r--r--boost/geometry/strategies/simplify/spherical.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/boost/geometry/strategies/simplify/spherical.hpp b/boost/geometry/strategies/simplify/spherical.hpp
index 0858087f38..4ff51b38cb 100644
--- a/boost/geometry/strategies/simplify/spherical.hpp
+++ b/boost/geometry/strategies/simplify/spherical.hpp
@@ -12,6 +12,7 @@
#include <boost/geometry/strategies/detail.hpp>
+#include <boost/geometry/strategies/distance/comparable.hpp>
#include <boost/geometry/strategies/distance/detail.hpp>
#include <boost/geometry/strategies/simplify/services.hpp>