diff --git a/avmedia/source/inc/mediamisc.hxx b/avmedia/source/inc/mediamisc.hxx
index f45f5b50da0b..53983aa27370 100644
--- a/avmedia/source/inc/mediamisc.hxx
+++ b/avmedia/source/inc/mediamisc.hxx
@@ -24,12 +24,13 @@
 #include <unotools/resmgr.hxx>
 
 #ifdef _WIN32
-#define AVMEDIA_MANAGER_SERVICE_NAME "com.sun.star.comp.avmedia.Manager_DirectX"
+constexpr OUString AVMEDIA_MANAGER_SERVICE_NAME = u"com.sun.star.comp.avmedia.Manager_DirectX"_ustr;
 #else
 #ifdef MACOSX
-#define AVMEDIA_MANAGER_SERVICE_NAME "com.sun.star.comp.avmedia.Manager_MacAVF"
+constexpr OUString AVMEDIA_MANAGER_SERVICE_NAME = u"com.sun.star.comp.avmedia.Manager_MacAVF"_ustr;
 #else
-#define AVMEDIA_MANAGER_SERVICE_NAME "com.sun.star.comp.avmedia.Manager_GStreamer"
+constexpr OUString AVMEDIA_MANAGER_SERVICE_NAME
+    = u"com.sun.star.comp.avmedia.Manager_GStreamer"_ustr;
 #endif
 #endif
 
diff --git a/avmedia/source/viewer/mediawindow_impl.cxx b/avmedia/source/viewer/mediawindow_impl.cxx
index 823152e3b029..71d449b75748 100644
--- a/avmedia/source/viewer/mediawindow_impl.cxx
+++ b/avmedia/source/viewer/mediawindow_impl.cxx
@@ -192,7 +192,7 @@ uno::Reference<media::XPlayer> MediaWindowImpl::createPlayer(const OUString& rUR
         else if (sToolkitName.startsWith(u"kf6") || sToolkitName.startsWith(u"qt6"))
             xPlayer = createPlayer(rURL, u"com.sun.star.comp.avmedia.Manager_Qt"_ustr, xContext);
         else
-            xPlayer = createPlayer(rURL, u"" AVMEDIA_MANAGER_SERVICE_NAME ""_ustr, xContext);
+            xPlayer = createPlayer(rURL, AVMEDIA_MANAGER_SERVICE_NAME, xContext);
     }
 
     return xPlayer;