diff --git a/models/repos.js b/models/repos.js
index be7381ed..067654df 100644
--- a/models/repos.js
+++ b/models/repos.js
@@ -292,9 +292,11 @@ function createModel () {
       var incomplete = dats.filter(function (dat) {
         return dat.network && dat.progress < 1
       })
-      var progress = incomplete.reduce(function (acc, dat) {
-        return acc + dat.progress
-      }, 0) / incomplete.length
+      var progress = incomplete.length
+        ? incomplete.reduce(function (acc, dat) {
+          return acc + dat.progress
+        }, 0) / incomplete.length
+        : 1
       if (progress === 1) progress = -1 // deactivate
 
       ipc.send('progress', progress)