diff --git a/app/modules/epics/dashboard/epic-row/epic-row.controller.spec.coffee b/app/modules/epics/dashboard/epic-row/epic-row.controller.spec.coffee
index 6e287471..f3df7c64 100644
--- a/app/modules/epics/dashboard/epic-row/epic-row.controller.spec.coffee
+++ b/app/modules/epics/dashboard/epic-row/epic-row.controller.spec.coffee
@@ -74,7 +74,6 @@ describe "EpicRow", ->
             })
         }
 
-        ctrl._calculateProgressBar()
         expect(ctrl.percentage).to.be.equal("50%")
 
     it "calculate progress bar in zero US", () ->
diff --git a/app/modules/epics/dashboard/epics-dashboard.controller.spec.coffee b/app/modules/epics/dashboard/epics-dashboard.controller.spec.coffee
index c4025018..419396b5 100644
--- a/app/modules/epics/dashboard/epics-dashboard.controller.spec.coffee
+++ b/app/modules/epics/dashboard/epics-dashboard.controller.spec.coffee
@@ -18,7 +18,6 @@
 ###
 
 describe "EpicsDashboard", ->
-    EpicsDashboardCtrl =  null
     provide = null
     controller = null
     mocks = {}
diff --git a/app/modules/epics/dashboard/story-row/story-row.controller.coffee b/app/modules/epics/dashboard/story-row/story-row.controller.coffee
index db82f81b..ce959248 100644
--- a/app/modules/epics/dashboard/story-row/story-row.controller.coffee
+++ b/app/modules/epics/dashboard/story-row/story-row.controller.coffee
@@ -31,6 +31,9 @@ class StoryRowController
         else
             totalTasks = @.story.get('tasks').size
             totalTasksCompleted = @.story.get('tasks').filter((it) -> it.get("is_closed")).size
-            @.percentage = "#{totalTasksCompleted * 100 / totalTasks}%"
+            if totalTasks == 0
+                @.percentage = "0%"
+            else
+                @.percentage = "#{totalTasksCompleted * 100 / totalTasks}%"
 
 module.controller("StoryRowCtrl", StoryRowController)
diff --git a/app/modules/epics/dashboard/story-row/story-row.controller.spec.coffee b/app/modules/epics/dashboard/story-row/story-row.controller.spec.coffee
new file mode 100644
index 00000000..9f6fe6b5
--- /dev/null
+++ b/app/modules/epics/dashboard/story-row/story-row.controller.spec.coffee
@@ -0,0 +1,71 @@
+###
+# Copyright (C) 2014-2015 Taiga Agile LLC <taiga@taiga.io>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# File: story-row.controller.spec.coffee
+###
+
+describe "StoryRowCtrl", ->
+    controller = null
+
+    beforeEach ->
+        module "taigaEpics"
+
+        inject ($controller) ->
+            controller = $controller
+
+    it "calculate percentage for some closed tasks", () ->
+        data = {
+            story: Immutable.fromJS(
+                tasks: [
+                    {is_closed: true},
+                    {is_closed: true},
+                    {is_closed: true},
+                    {is_closed: false},
+                    {is_closed: false},
+                ]
+            )
+        }
+
+        ctrl = controller "StoryRowCtrl", null, data
+        expect(ctrl.percentage).to.be.equal("60%")
+
+    it "calculate percentage for closed story", () ->
+        data = {
+            story: Immutable.fromJS(
+                tasks: [
+                    {is_closed: true},
+                    {is_closed: true},
+                    {is_closed: true},
+                    {is_closed: false},
+                    {is_closed: false},
+                ]
+                is_closed: true
+            )
+        }
+
+        ctrl = controller "StoryRowCtrl", null, data
+        expect(ctrl.percentage).to.be.equal("100%")
+
+    it "calculate percentage for closed story", () ->
+        data = {
+            story: Immutable.fromJS(
+                tasks: []
+            )
+        }
+
+        ctrl = controller "StoryRowCtrl", null, data
+        expect(ctrl.percentage).to.be.equal("0%")
+