diff --git a/Apollonius_graph_2/include/CGAL/Apollonius_graph_2/Compare_y_2.h b/Apollonius_graph_2/include/CGAL/Apollonius_graph_2/Compare_y_2.h
index dacb526d248..e0369bba69d 100644
--- a/Apollonius_graph_2/include/CGAL/Apollonius_graph_2/Compare_y_2.h
+++ b/Apollonius_graph_2/include/CGAL/Apollonius_graph_2/Compare_y_2.h
@@ -22,7 +22,7 @@
 #ifndef CGAL_APOLLONIUS_GRAPH_2_COMPARE_Y_2_H
 #define CGAL_APOLLONIUS_GRAPH_2_COMPARE_Y_2_H
 
-#include <CGAL/Apollonius_graph_2/basic.h>>
+#include <CGAL/Apollonius_graph_2/basic.h>
 
 //--------------------------------------------------------------------