diff --git a/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/include/temp.h b/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/include/temp.h
index 55a46ea3bb6..c1403aced06 100644
--- a/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/include/temp.h
+++ b/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/include/temp.h
@@ -8,7 +8,7 @@
 #include <map>
 #include <set>
 #include <assert.h>
-#include <unordered_set>
+//#include <unordered_set>
 #include <string>
 #include <fstream>