diff --git a/Doxyfile.in b/Doxyfile.in
index decbafbecf..6eab6968e1 100644
--- a/Doxyfile.in
+++ b/Doxyfile.in
@@ -1453,7 +1453,7 @@ MATHJAX_CODEFILE       =
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-SEARCHENGINE           = NO
+SEARCHENGINE           = YES
 
 # When the SERVER_BASED_SEARCH tag is enabled the search engine will be
 # implemented using a web server instead of a web client using Javascript. There