diff --git a/lib/utils/hash.py b/lib/utils/hash.py
index 7f99b7cea..91aba6827 100644
--- a/lib/utils/hash.py
+++ b/lib/utils/hash.py
@@ -405,9 +405,10 @@ def attackCachedUsersPasswords():
 
         for user in kb.data.cachedUsersPasswords.keys():
             for i in xrange(len(kb.data.cachedUsersPasswords[user])):
-                value = kb.data.cachedUsersPasswords[user][i].lower().split()[0]
-                if value in lut:
-                    kb.data.cachedUsersPasswords[user][i] += "%s    clear-text password: %s" % ('\n' if kb.data.cachedUsersPasswords[user][i][-1] != '\n' else '', lut[value])
+                if (kb.data.cachedUsersPasswords[user][i] or "").strip():
+                    value = kb.data.cachedUsersPasswords[user][i].lower().split()[0]
+                    if value in lut:
+                        kb.data.cachedUsersPasswords[user][i] += "%s    clear-text password: %s" % ('\n' if kb.data.cachedUsersPasswords[user][i][-1] != '\n' else '', lut[value])
 
 def attackDumpedTable():
     if kb.data.dumpedTable: