diff --git a/include/tests_authentication b/include/tests_authentication
index 26bc17c0..94b48a73 100644
--- a/include/tests_authentication
+++ b/include/tests_authentication
@@ -40,7 +40,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         # Search accounts with UID 0
         LogText "Test: Searching accounts with UID 0"
-        FIND=(${GREPBINARY} ':0:' /etc/passwd | ${EGREPBINARY} -v '^#|^root:|^(\+:\*)?:0:0:::' | cut -d ":" -f1,3 | ${GREPBINARY} ':0')
+        FIND=$(${GREPBINARY} ':0:' /etc/passwd | ${EGREPBINARY} -v '^#|^root:|^(\+:\*)?:0:0:::' | cut -d ":" -f1,3 | ${GREPBINARY} ':0')
         if [ ! "${FIND}" = "" ]; then
             Display --indent 2 --text "- Administrator accounts" --result "${STATUS_WARNING}" --color RED
             LogText "Result: Found more than one administrator accounts"