diff --git a/radmsg.c b/radmsg.c
index 7bcbabb..750b166 100644
--- a/radmsg.c
+++ b/radmsg.c
@@ -405,6 +405,15 @@ struct tlv *makevendortlv(uint32_t vendor, struct tlv *attr){
     return newtlv;
 }
 
+int resizeattr(struct tlv *attr, uint8_t newlen) {
+    if (newlen > RAD_Max_Attr_Value_Length)
+        return 0;
+
+    if (resizetlv(attr, newlen))
+        return 1;
+    return 0;
+}
+
 /* Local Variables: */
 /* c-file-style: "stroustrup" */
 /* End: */
diff --git a/radmsg.h b/radmsg.h
index 1fc4d3b..fadc375 100644
--- a/radmsg.h
+++ b/radmsg.h
@@ -58,6 +58,7 @@ uint8_t attrname2val(char *attrname);
 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type);
 int attrvalidate(unsigned char *attrs, int length);
 struct tlv *makevendortlv(uint32_t vendor, struct tlv *attr);
+int resizeattr(struct tlv *attr, uint8_t newlen);
 
 #endif /*_RADMSG_H*/
 
diff --git a/rewrite.c b/rewrite.c
index 58e6aff..13921db 100644
--- a/rewrite.c
+++ b/rewrite.c
@@ -278,22 +278,6 @@ struct rewrite *getrewrite(char *alt1, char *alt2) {
     return NULL;
 }
 
-int resizeattr(struct tlv *attr, uint8_t newlen) {
-    uint8_t *newv;
-
-    if (newlen > RAD_Max_Attr_Value_Length)
-        return 0;
-
-    if (newlen != attr->l) {
-        newv = realloc(attr->v, newlen);
-        if (newlen && !newv)
-            return 0;
-        attr->v = newv;
-        attr->l = newlen;
-    }
-    return 1;
-}
-
 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint32_t subattr) {
     if (!attrs)
         return 0;
@@ -393,13 +377,8 @@ int dorewritemodattr(struct tlv *attr, struct modattr *modattr) {
         }
     }
     reslen += i - start;
-    if (reslen > 253) {
-        debug(DBG_INFO, "rewritten attribute length would be %d, max possible is 253, discarding message", reslen);
-        free(in);
-        return 0;
-    }
-
     if (!resizeattr(attr, reslen)) {
+        debug(DBG_INFO, "rewritten attribute to length %d failed, discarding message", reslen);
         free(in);
         return 0;
     }
diff --git a/rewrite.h b/rewrite.h
index b7ead27..7176898 100644
--- a/rewrite.h
+++ b/rewrite.h
@@ -27,7 +27,6 @@ void addrewrite(char *value, char **rmattrs, char **rmvattrs, char **addattrs,
 int dorewrite(struct radmsg *msg, struct rewrite *rewrite);
 struct modattr *extractmodattr(char *nameval);
 struct rewrite *getrewrite(char *alt1, char *alt2);
-int resizeattr(struct tlv *attr, uint8_t newlen);
 
 int dorewritemodattr(struct tlv *attr, struct modattr *modattr);
 int addvendorattr(struct radmsg *msg, uint32_t vendor, struct tlv *attr);
diff --git a/tlv11.c b/tlv11.c
index 7516d6c..d570b39 100644
--- a/tlv11.c
+++ b/tlv11.c
@@ -105,6 +105,18 @@ uint8_t *tlv2str(struct tlv *tlv) {
     return s;
 }
 
+struct tlv *resizetlv(struct tlv *tlv, uint8_t newlen) {
+    uint8_t *newv;
+    if (newlen != tlv->l) {
+        newv = realloc(tlv->v, newlen);
+        if (newlen && !newv)
+            return NULL;
+        tlv->v = newv;
+        tlv->l = newlen;
+    }
+    return tlv;
+}
+
 /* Local Variables: */
 /* c-file-style: "stroustrup" */
 /* End: */
diff --git a/tlv11.h b/tlv11.h
index 5384481..84db3d7 100644
--- a/tlv11.h
+++ b/tlv11.h
@@ -16,6 +16,7 @@ struct list *copytlvlist(struct list *);
 void freetlvlist(struct list *);
 void rmtlv(struct list *, uint8_t);
 uint8_t *tlv2str(struct tlv *tlv);
+struct tlv *resizetlv(struct tlv *, uint8_t);
 
 /* Local Variables: */
 /* c-file-style: "stroustrup" */