diff --git a/firefox-xremote-client.sh.in b/firefox-xremote-client.sh.in
index f6ac338..806810a 100644
--- a/firefox-xremote-client.sh.in
+++ b/firefox-xremote-client.sh.in
@@ -11,7 +11,7 @@ export MOZILLA_FIVE_HOME
 ## Select the propper plugin dir
 ## Wrapped plug-ins are located in /lib/mozilla/plugins-wrapped
 ##
-if [ -x "$MOZ_LIB_DIR/nspluginwrapper/npviewer" ]
+if [ -x "/usr/bin/mozilla-plugin-config" ]
 then
   MOZ_PLUGIN_DIR="plugins-wrapped"
 else