diff --git a/src/CensorWords.php b/src/CensorWords.php
index 0eede25..7c9eed5 100644
--- a/src/CensorWords.php
+++ b/src/CensorWords.php
@@ -124,7 +124,7 @@ private function replaceWhiteListed($string, $reverse = false)
             } else {
                 $placeHolder                          = str_replace('[i]', $key, $this->whiteListPlaceHolder);
                 $this->whiteList[$key]['placeHolder'] = $placeHolder;
-                $string                               = str_replace($list['word'], $placeHolder, $string);
+                $string                               = str_ireplace($list['word'], $placeHolder, $string);
             }
         }
 
diff --git a/src/dict/en-base.php b/src/dict/en-base.php
index a286a74..3e2f60d 100644
--- a/src/dict/en-base.php
+++ b/src/dict/en-base.php
@@ -18,6 +18,7 @@
 		'fag',
 		'faggot',
 		'fuck',
+        'fucking',
 		'fuk',
 		'handjob',
 		'homo',
diff --git a/src/dict/en-uk.php b/src/dict/en-uk.php
index 975dac9..00d2081 100644
--- a/src/dict/en-uk.php
+++ b/src/dict/en-uk.php
@@ -44,6 +44,7 @@
 		'fcuk',
 		'fucker',
 		'fuckface',
+        'fuckin',
 		'fuckr',
 		'fuct',
 		'genital',
diff --git a/tests/CensorTest.php b/tests/CensorTest.php
index 5682094..01e9567 100644
--- a/tests/CensorTest.php
+++ b/tests/CensorTest.php
@@ -120,7 +120,7 @@ public function testWhiteListCensorObj()
     ]);
 
     $string = $censor->censorString('fuck dumb ass bitch FUCK Mass');
-    $this->assertEquals('fuck dumb ass ***** **** Mass', $string['clean']);
+    $this->assertEquals('fuck dumb ass ***** fuck Mass', $string['clean']);
   }