diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index abbbaee8b..517838148 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -34,7 +34,7 @@ IGNORE_PREFIX          = pw_ \
                          spa_ \
                          SPA_
 GENERATE_TREEVIEW      = YES
-SEARCHENGINE           = NO
+SEARCHENGINE           = YES
 GENERATE_LATEX         = NO
 
 MACRO_EXPANSION        = YES