diff --git a/include/tests_authentication b/include/tests_authentication
index 7a9b4196..e69f3aaa 100644
--- a/include/tests_authentication
+++ b/include/tests_authentication
@@ -238,7 +238,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         logtext "Test: Checking password file consistency (pwck)"
         TESTED=0
-        case ${OS} in)
+        case ${OS} in
             "Linux")
                 FIND=`/usr/sbin/pwck -q -r 2> /dev/null; echo $?`
                 TESTED=1