diff --git a/web/encounter.js b/web/encounter.js
index 940758a..c681e42 100644
--- a/web/encounter.js
+++ b/web/encounter.js
@@ -57,7 +57,7 @@ document.getElementById('terrainForm').addEventListener('submit', function (even
 
         function formatDiceMnemonic(data) {
             return Array.isArray(data) ?
-                data[0] + "d" + data[1] + (data[2] === 0 ? "" : "+" + data[2]) :
+                data[0] + "d" + data[1] + (data[2] === 0 ? "" : (data[2] > 0 ? "+" : "") + data[2]) :
                 data.toString();
         }