diff --git a/package.json b/package.json
index d3b645b..0f51ad5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rianbotha/coverage-summary",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "description": "Summarizes istanbul coverage report for specified folders.",
   "main": "index.js",
   "bin": {
diff --git a/src/format-percent.js b/src/format-percent.js
index 4989c09..b02c6e2 100644
--- a/src/format-percent.js
+++ b/src/format-percent.js
@@ -1,6 +1,7 @@
 const formatThreshold = require('./format-threshold');
 
 const formatPercent = (number, total) => {
+  if (number === 0 || total === 0) return formatThreshold('0%', 0);
   const percent = Math.round(number / total * 100 * 100) / 100;
   return formatThreshold(percent + '%', percent);
 };