diff --git a/doc/config/qtmultimedia_doc.pri b/doc/config/qtmultimedia_doc.pri
index 8aab3231..caa80329 100644
--- a/doc/config/qtmultimedia_doc.pri
+++ b/doc/config/qtmultimedia_doc.pri
@@ -7,15 +7,8 @@ win32:!win32-g++ {
     unixstyle = true
 }
 
-system(which qdoc) {
-    QDOC = qdoc
-} else {
-    exists($$QT.core.bins/qdoc3) {
-        QDOC = $$QT.core.bins/qdoc3
-    } else {
-        warning("No qdoc executable found.")
-    }
-}
+qtPrepareTool(QDOC, qdoc)
+isEmpty(QDOC): warning("No qdoc executable found.")
 
 ONLINE_CONF = $$PWD/qtmultimedia.qdocconf
 DITA_CONF = $$PWD/qtmultimedia-dita.qdocconf