diff --git a/Collector/DebugPluginCollector.php b/Collector/DebugPluginCollector.php
index 220557b5..9693b234 100644
--- a/Collector/DebugPluginCollector.php
+++ b/Collector/DebugPluginCollector.php
@@ -78,11 +78,11 @@ public function addFailure(Exception $exception, $clientName, $depth)
     }
 
     /**
-     * Returns the successful request-resonse pairs.
+     * Returns the successful request-response pairs.
      *
-     * @return array
+     * @return int
      */
-    public function getSucessfulRequests()
+    public function getSuccessfulRequests()
     {
         $count = 0;
         foreach ($this->data as $client) {
@@ -99,9 +99,9 @@ public function getSucessfulRequests()
     }
 
     /**
-     * Returns the failed request-resonse pairs.
+     * Returns the failed request-response pairs.
      *
-     * @return array
+     * @return int
      */
     public function getFailedRequests()
     {
@@ -126,7 +126,7 @@ public function getFailedRequests()
      */
     public function getTotalRequests()
     {
-        return $this->getSucessfulRequests() + $this->getFailedRequests();
+        return $this->getSuccessfulRequests() + $this->getFailedRequests();
     }
 
     /**
diff --git a/Collector/RequestStackProvider.php b/Collector/RequestStackProvider.php
index c5a52e5d..ef280658 100644
--- a/Collector/RequestStackProvider.php
+++ b/Collector/RequestStackProvider.php
@@ -74,13 +74,13 @@ public static function createFromCollectedData(array $data)
      */
     private static function createOne($messages)
     {
-        $orderedFaulure = [];
+        $orderedFailure = [];
         $orderedRequests = [];
         $orderedResponses = [];
 
         foreach ($messages['failure'] as $depth => $failures) {
             foreach ($failures as $idx => $failure) {
-                $orderedFaulure[$idx][$depth] = $failure;
+                $orderedFailure[$idx][$depth] = $failure;
             }
         }
 
@@ -96,7 +96,7 @@ private static function createOne($messages)
             }
         }
 
-        return new self($orderedFaulure, $orderedRequests, $orderedResponses);
+        return new self($orderedFailure, $orderedRequests, $orderedResponses);
     }
 
     /**
@@ -114,7 +114,7 @@ public function getStackIndexKeys()
      *
      * @return array
      */
-    public function getRequstStack($idx)
+    public function getRequestStack($idx)
     {
         return $this->requests[$idx];
     }
diff --git a/DependencyInjection/HttplugExtension.php b/DependencyInjection/HttplugExtension.php
index e5035c3b..baeff099 100644
--- a/DependencyInjection/HttplugExtension.php
+++ b/DependencyInjection/HttplugExtension.php
@@ -89,7 +89,7 @@ private function configureClients(ContainerBuilder $container, array $config)
 
         foreach ($config['clients'] as $name => $arguments) {
             if ($first === null) {
-                // Save the name of the first configurated client.
+                // Save the name of the first configured client.
                 $first = $name;
             }
 
@@ -304,7 +304,6 @@ function ($id) {
             ->addArgument($pluginClientOptions)
         ;
 
-
         /*
          * Decorate the client with clients from client-common
          */
diff --git a/Resources/public/script/httplug.js b/Resources/public/script/httplug.js
index fbd84e8f..4740a29f 100644
--- a/Resources/public/script/httplug.js
+++ b/Resources/public/script/httplug.js
@@ -111,7 +111,7 @@ var httplug_isHidden = function (el) {
 }
 
 /**
- * Toggle visibility on elemets
+ * Toggle visibility on elements
  * @param els
  * @param display defaults to "block"
  */
diff --git a/Tests/Unit/DependencyInjection/HttplugExtensionTest.php b/Tests/Unit/DependencyInjection/HttplugExtensionTest.php
index 598a8e07..d9704bd1 100644
--- a/Tests/Unit/DependencyInjection/HttplugExtensionTest.php
+++ b/Tests/Unit/DependencyInjection/HttplugExtensionTest.php
@@ -195,7 +195,7 @@ public function testProfilingWhenToolbarIsSpecificallyOn()
 
         $this->assertTrue(isset($arguments[3]));
         $this->assertTrue(isset($arguments[3]['debug_plugins']));
-        $this->assertFalse(empty($arguments[3]['debug_plugins']));
+        $this->assertNotEmpty($arguments[3]['debug_plugins']);
     }
 
     private function verifyProfilingDisabled()