1 files changed, 1 insertions, 0 deletions

diff --git a/ldid.hpp b/ldid.hpp
index fbacc86..b3631bb 100644
--- a/ldid.hpp
+++ b/ldid.hpp
@@ -3,6 +3,7 @@
 
 #include <cstdlib>
 #include <map>
+#include <set>
 #include <sstream>
 #include <streambuf>
 #include <string>