diff --git a/tmp/postinstall b/tmp/postinstall
index 6b1456b..2faa97d 100644
--- a/tmp/postinstall
+++ b/tmp/postinstall
@@ -61,9 +61,15 @@ if ! grep firefox /etc/ld.so.conf >/dev/null 2>&1; then
 fi
 
 if [ -f /usr/lib64/jdk/plugin/x86_64/ns7/libjavaplugin_oji.so ]; then
-	cd /opt/firefox/lib64/firefox*/plugins
+	if [ ! -d /opt/firefox/lib64/firefox/plugins ]; then
+		mkdir /opt/firefox/lib64/firefox/plugins
+	fi
+	cd /opt/firefox/lib64/firefox/plugins
 	ln -s /usr/lib64/jdk/plugin/x86_64/ns7/libjavaplugin_oji.so .
 elif [ -f /usr/lib/jdk/plugin/i386/ns7/libjavaplugin_oji.so ]; then
-	cd /opt/firefox/lib/firefox*/plugins
+	if [ ! -d /opt/firefox/lib/firefox/plugins ]; then
+		mkdir /opt/firefox/lib/firefox/plugins
+	fi
+	cd /opt/firefox/lib/firefox/plugins
 	ln -s /usr/lib/jdk/plugin/i386/ns7/libjavaplugin_oji.so .
 fi