diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index fe54a5d36..5605c917d 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -24,7 +24,7 @@ if(ENABLE_MAN OR ENABLE_DOC)
 
   if(ASCIIDOCTOR_FOUND)
 
-    set(ASCIIDOCTOR_ARGS -a experimental -a revnumber="${VERSION}" -a sectanchors -a source-highlighter=prettify)
+    set(ASCIIDOCTOR_ARGS -a experimental -a icons=font -a revnumber="${VERSION}" -a sectanchors -a source-highlighter=prettify)
 
     add_subdirectory(en)
     add_subdirectory(fr)