Index: graphspell-js/dawg.js
==================================================================
--- graphspell-js/dawg.js
+++ graphspell-js/dawg.js
@@ -496,13 +496,13 @@
     }
 
     sortArcs (dValOccur) {
         let lTemp = Array.from(this.arcs.entries());
         lTemp.sort(function (a, b) {
-            if (dValOccur.get(a[0], 0) > dValOccur.get(b[0], 0))
+            if (dValOccur.get(a[0]) > dValOccur.get(b[0]))
                 return -1;
-            if (dValOccur.get(a[0], 0) < dValOccur.get(b[0], 0))
+            if (dValOccur.get(a[0]) < dValOccur.get(b[0]))
                 return 1;
             return 0;
         });
         this.arcs = new Map(lTemp);
     }