diff --git a/nlsr.c b/nlsr.c
index 6655558..3895e5f 100644
--- a/nlsr.c
+++ b/nlsr.c
@@ -250,14 +250,17 @@
    	hashtb_start(nlsr->npl, e);
     	res = hashtb_seek(e, np->name, strlen(np->name), 0);
 
-	assert(res == HT_NEW_ENTRY);   
+	if(res == HT_NEW_ENTRY)
+	{   
 
-	hnp = e->data;
-	hnp->name=(char *)malloc(np->length);
-    	memcpy(hnp->name,np->name,np->length);
-	hnp->length=np->length;
+		hnp = e->data;
+		hnp->name=(char *)malloc(np->length);
+    		memcpy(hnp->name,np->name,np->length);
+		hnp->length=np->length;
+	}
+    	
+	hashtb_end(e);
 
-    	hashtb_end(e);
 
 	printf("\n");