diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6437b270f..7195f7fa9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,6 +31,7 @@ if(DOXYGEN_FOUND)
     set(DOXYGEN_EXTRACT_PRIVATE YES)
     set(DOCYGEN_GENERATE_TREEVIEW YES)
     set(DOXYGEN_STRIP_CODE_COMMENTS NO)
+    set(DOXYGEN_EXT_LINKS_IN_WINDOW YES)
     set(DOXYGEN_BUILTIN_STL_SUPPORT YES)
     set(DOXYGEN_FILE_PATTERNS *.cpp *.h *.hpp *.md)
     set(DOXYGEN_MATHJAX_EXTENSIONS  TeX/AMSmath TeX/AMSsymbols)