diff --git a/README.md b/README.md
index 516b104..f8c924a 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ Implements hotp according to [RFC4226](https://tools.ietf.org/html/rfc4226) and
 Class GoogleAuthenticator
 -------------------------
 
-Static function class to generate a correct url for the QR code, so you can easy scan it with your device. Google Authenticator is avaiaible as application for iPhone and Android. This removes the burden to create such an app from the developers of websites by using this set of classes.
+Static function class to generate a correct url for the QR code, so you can easily scan it with your device. Google Authenticator is available as an application for iPhone and Android. This removes the burden to create such an app from the developers of websites by using this set of classes.
 
 There are also older open source versions of the Google Authenticator app for both [iPhone](https://github.com/google/google-authenticator) and [Android](https://github.com/google/google-authenticator-android).
 
@@ -97,5 +97,5 @@ Acknowledgements
 
 The classes have been inspired by many different places that were talking about otp and Google Authenticator. Thank you all for your help.
 
-Project setup ideas blantently taken from https://github.com/Seldaek/monolog
+Project setup ideas blatantly taken from https://github.com/Seldaek/monolog
 
diff --git a/example/index.php b/example/index.php
index e5e9b7f..efdc12a 100644
--- a/example/index.php
+++ b/example/index.php
@@ -72,7 +72,7 @@
 <?php
 
 if (isset($_POST['otpkey'])) {
-	// Sanatizing, this should take care of it
+	// Sanitizing, this should take care of it
 	$key = preg_replace('/[^0-9]/', '', $_POST['otpkey']);
 	
 	// Standard is 6 for keys, but can be changed with setDigits on $otp
diff --git a/src/GoogleAuthenticator.php b/src/GoogleAuthenticator.php
index 4a4b9e1..8b909a9 100644
--- a/src/GoogleAuthenticator.php
+++ b/src/GoogleAuthenticator.php
@@ -100,7 +100,7 @@ public static function getKeyUri($type, $label, $secret, $counter = null, $optio
             $otpauth .= '&issuer=' . rawurlencode($options['issuer']);
         }
 
-        // image (to accepts images for freeotp)
+        // image (to accept images for freeotp)
         if (array_key_exists('image', $options)) {
             $otpauth .= '&image=' . $options['image'];
         }
diff --git a/src/Otp.php b/src/Otp.php
index 638cd4d..2373186 100644
--- a/src/Otp.php
+++ b/src/Otp.php
@@ -196,7 +196,7 @@ public function getAlgorithm()
     }
     
     /**
-     * Setting period lenght for totp
+     * Setting period length for totp
      *
      * @param integer $period
      * @throws \InvalidArgumentException
diff --git a/src/OtpInterface.php b/src/OtpInterface.php
index 4fa410c..0db2bff 100644
--- a/src/OtpInterface.php
+++ b/src/OtpInterface.php
@@ -65,7 +65,7 @@ function checkHotp($secret, $counter, $key);
     function checkHotpResync($secret, $counter, $key, $counterwindow = 2);
 
     /**
-     * Checks Totp agains a key
+     * Checks Totp against a key
      *
      * @param string  $secret    Base32 Secret String
      * @param string  $key       User supplied key
diff --git a/tests/GoogleAuthenticatorTest.php b/tests/GoogleAuthenticatorTest.php
index a299ab2..64f4b69 100644
--- a/tests/GoogleAuthenticatorTest.php
+++ b/tests/GoogleAuthenticatorTest.php
@@ -29,7 +29,7 @@ public function testGetQrCodeUrl()
 			GoogleAuthenticator::getQrCodeUrl('hotp', 'user@host.com', $secret, 1234)
 		);
 		
-		// totp, this time with a parameter for chaning the size of the QR
+		// totp, this time with a parameter for changing the size of the QR
 		$this->assertEquals(
 				'https://chart.googleapis.com/chart?chs=300x300&cht=qr&chld=M|0&chl=otpauth%3A%2F%2Ftotp%2Fuser%2540host.com%3Fsecret%3DMEP3EYVA6XNFNVNM',
 				GoogleAuthenticator::getQrCodeUrl('totp', 'user@host.com', $secret, null, array('height' => 300, 'width' => 300))