diff --git a/documentation/conf.py b/documentation/conf.py
index 65fa2411e489909a9af68511a7855b6c961bed56..8df488166df3cbd642f3b7f1ad83493ab68efce4 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -35,6 +35,7 @@ if read_the_docs_build:
     configureDoxyLayout("DoxyLayout.in", "DoxyLayout.xml", doc_url , "CORSIKA 8 Webpage")
     subprocess.call('mkdir -p _build/workdir/doxygen; doxygen Doxyfile', shell=True)
     html_extra_path = ['_build/workdir/']
+    breathe_projects['CORSIKA8'] = '_build/workdir/doxygen/xml'