diff --git pbfplugin.pro pbfplugin.pro
index 1fccace..7d47d02 100644
--- pbfplugin.pro
+++ pbfplugin.pro
@@ -40,8 +40,8 @@ RESOURCES += pbfplugin.qrc
 DEFINES += QT_NO_DEPRECATED_WARNINGS
 
 unix:!macx:!android {
-    LIBS += -lprotobuf-lite \
-        -lz
+    CONFIG += link_pkgconfig
+    PKGCONFIG += protobuf-lite zlib
 
     target.path += $$[QT_INSTALL_PLUGINS]/imageformats
     INSTALLS += target