diff --git a/config/packages/avanzu_admin_theme.yml b/config/packages/avanzu_admin_theme.yml
index 74f19c78..fe9d8b07 100644
--- a/config/packages/avanzu_admin_theme.yml
+++ b/config/packages/avanzu_admin_theme.yml
@@ -1,6 +1,6 @@
 avanzu_admin_theme:
     use_twig: true
-    use_assetic: true
+    use_assetic: false
     bower_bin: "/usr/local/bin/bower"
     options:
         default_avatar: build/images/default_avatar.png
diff --git a/config/packages/kimai.yaml b/config/packages/kimai.yaml
index 633be1e1..acf09a38 100644
--- a/config/packages/kimai.yaml
+++ b/config/packages/kimai.yaml
@@ -3,7 +3,7 @@ kimai:
     timesheet:
 
         # Whether we display start and end time columns (false) or durations only (true).
-        # Setting this to true will also change the "edit timesheet" forms, more infos available in the confiugrations docu.
+        # Setting this to true will also change the "edit timesheet" forms, more infos available in the configurations docu.
         duration_only: false
 
         # Rounding rules are used to round the begin & end dates and the duration for timesheet records.
diff --git a/src/DataFixtures/AppFixtures.php b/src/DataFixtures/AppFixtures.php
index b51dd300..1c3f79e6 100644
--- a/src/DataFixtures/AppFixtures.php
+++ b/src/DataFixtures/AppFixtures.php
@@ -116,7 +116,7 @@ class AppFixtures extends Fixture
             // no alias to test twig username macro
             [
                 null, 'Super Administrator', self::USERNAME_SUPER_ADMIN, 'susan_super@example.com', 'ROLE_SUPER_ADMIN',
-                '/bundles/avanzuadmintheme/img/avatar.png', true
+                '/build/images/default_avatar.png', true
             ]
         ];
     }
diff --git a/src/DependencyInjection/Compiler/DoctrineCompilerPass.php b/src/DependencyInjection/Compiler/DoctrineCompilerPass.php
index 8b76e0f1..35b0c336 100644
--- a/src/DependencyInjection/Compiler/DoctrineCompilerPass.php
+++ b/src/DependencyInjection/Compiler/DoctrineCompilerPass.php
@@ -11,7 +11,6 @@ namespace App\DependencyInjection\Compiler;
 
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
 use Symfony\Component\Yaml\Yaml;
 
 /**
@@ -60,7 +59,7 @@ class DoctrineCompilerPass implements CompilerPassInterface
         if ($engine === null) {
             throw new \Exception(
                 'Could not detect database engine. Please set the environment config DATABASE_ENGINE ' .
-                'to one ' . implode(', ', $this->allowedEngines) . ', e.g. in your .env file: DATABASE_ENGINE=sqlite'
+                'to one of: "' . implode(', ', $this->allowedEngines) . '" in your .env file: DATABASE_ENGINE=sqlite'
             );
         }
 
diff --git a/src/Entity/Timesheet.php b/src/Entity/Timesheet.php
index aa57b095..5d5e29a3 100644
--- a/src/Entity/Timesheet.php
+++ b/src/Entity/Timesheet.php
@@ -156,20 +156,12 @@ class Timesheet
 
     /**
      * Get duration
+     * Do not rely on the results of this method for active records.
      *
      * @return integer
      */
     public function getDuration()
     {
-        if ($this->begin === null) {
-            return 0;
-        }
-
-        if ($this->end === null) {
-            $current = new \DateTime();
-            return $current->getTimestamp() - $this->begin->getTimestamp();
-        }
-
         return $this->duration;
     }
 
diff --git a/src/Twig/Extensions.php b/src/Twig/Extensions.php
index c7a42b8d..874394e5 100644
--- a/src/Twig/Extensions.php
+++ b/src/Twig/Extensions.php
@@ -46,7 +46,6 @@ class Extensions extends \Twig_Extension
     {
         return [
             new TwigFilter('duration', [$this, 'duration']),
-            new TwigFilter('durationForEntry', [$this, 'durationForEntry']),
             new TwigFilter('money', [$this, 'money']),
             new TwigFilter('currency', [$this, 'currency']),
             new TwigFilter('country', [$this, 'country']),
@@ -63,27 +62,22 @@ class Extensions extends \Twig_Extension
         ];
     }
 
-    /**
-     * Returns the formatted duration for a Timesheet entry.
-     *
-     * @param Timesheet $entry
-     * @param bool $includeSeconds
-     * @return string
-     */
-    public function durationForEntry(Timesheet $entry, $includeSeconds = false)
-    {
-        return $this->duration($entry->getDuration(), $includeSeconds);
-    }
-
     /**
      * Transforms seconds into a duration string.
      *
-     * @param $seconds
+     * @param int|Timesheet $duration
      * @param bool $includeSeconds
      * @return string
      */
-    public function duration($seconds, $includeSeconds = false)
+    public function duration($duration, $includeSeconds = false)
     {
+        $seconds = $duration;
+        if ($duration instanceof Timesheet) {
+            $seconds = $duration->getDuration();
+            if ($duration->getEnd() === null) {
+                $seconds = time() - $duration->getBegin()->getTimestamp();
+            }
+        }
         return $this->durationFormatter->format($seconds, $includeSeconds) . ' h';
     }
 
diff --git a/templates/admin/timesheet.html.twig b/templates/admin/timesheet.html.twig
index 54bdd0f9..f1800e14 100644
--- a/templates/admin/timesheet.html.twig
+++ b/templates/admin/timesheet.html.twig
@@ -45,7 +45,7 @@
                 {% if not duration_only %}
                     <td class="hidden-xs">&dash;</td>
                 {% endif %}
-                <td><i>{{ entry.duration|duration }}</i></td>
+                <td><i>{{ entry|duration }}</i></td>
                 <td>&dash;</td>
             {% endif %}
 
diff --git a/templates/navbar/active-entries.html.twig b/templates/navbar/active-entries.html.twig
index b2246209..28d26acc 100644
--- a/templates/navbar/active-entries.html.twig
+++ b/templates/navbar/active-entries.html.twig
@@ -19,7 +19,7 @@
                             </div>
                             <h4>
                                 {{ entry.activity.name }}
-                                <small><i class="fa fa-clock-o"></i> {{ entry|durationForEntry }}</small>
+                                <small><i class="fa fa-clock-o"></i> {{ entry|duration }}</small>
                             </h4>
                             <p>{{ entry.activity.project.name }} ({{ entry.activity.project.customer.name }})</p>
                         </a>
diff --git a/templates/timesheet/index.html.twig b/templates/timesheet/index.html.twig
index 7a285b92..3f129623 100644
--- a/templates/timesheet/index.html.twig
+++ b/templates/timesheet/index.html.twig
@@ -45,7 +45,7 @@
                 {% if not duration_only %}
                     <td>&dash;</td>
                 {% endif %}
-                <td class="hidden-xs"><i>{{ entry.duration|duration }}</i></td>
+                <td class="hidden-xs"><i>{{ entry|duration }}</i></td>
                 <td class="hidden-xs">&dash;</td>
             {% endif %}
 
diff --git a/tests/Twig/ExtensionsTest.php b/tests/Twig/ExtensionsTest.php
index 8c1551b2..f3bf0f03 100644
--- a/tests/Twig/ExtensionsTest.php
+++ b/tests/Twig/ExtensionsTest.php
@@ -22,7 +22,7 @@ class ExtensionsTest extends TestCase
 
     public function testGetFilters()
     {
-        $filters = ['duration', 'durationForEntry', 'money', 'currency', 'country'];
+        $filters = ['duration', 'money', 'currency', 'country'];
         $sut = new Extensions('de');
         $twigFilters = $sut->getFilters();
         $this->assertCount(count($filters), $twigFilters);
@@ -110,8 +110,8 @@ class ExtensionsTest extends TestCase
         $this->assertEquals('02:37 h', $sut->duration($record->getDuration()));
         $this->assertEquals('02:37:17 h', $sut->duration($record->getDuration(), true));
 
-        $this->assertEquals('02:37 h', $sut->durationForEntry($record));
-        $this->assertEquals('02:37:17 h', $sut->durationForEntry($record, true));
+        $this->assertEquals('02:37 h', $sut->duration($record));
+        $this->assertEquals('02:37:17 h', $sut->duration($record, true));
     }
 
     protected function getTimesheet($seconds)