diff --git a/src/t_list.c b/src/t_list.c
index 961f59ae4..f8ca27458 100644
--- a/src/t_list.c
+++ b/src/t_list.c
@@ -592,20 +592,14 @@ void lposCommand(client *c) {
             }
         } else if (!strcasecmp(opt,"COUNT") && moreargs) {
             j++;
-            if (getLongFromObjectOrReply(c, c->argv[j], &count, NULL) != C_OK)
+            if (getPositiveLongFromObjectOrReply(c, c->argv[j], &count,
+              "COUNT can't be negative") != C_OK)
                 return;
-            if (count < 0) {
-                addReplyError(c,"COUNT can't be negative");
-                return;
-            }
         } else if (!strcasecmp(opt,"MAXLEN") && moreargs) {
             j++;
-            if (getLongFromObjectOrReply(c, c->argv[j], &maxlen, NULL) != C_OK)
+            if (getPositiveLongFromObjectOrReply(c, c->argv[j], &maxlen, 
+              "MAXLEN can't be negative") != C_OK)
                 return;
-            if (maxlen < 0) {
-                addReplyError(c,"MAXLEN can't be negative");
-                return;
-            }
         } else {
             addReplyErrorObject(c,shared.syntaxerr);
             return;