diff --git a/src/ProfaneValidator.php b/src/ProfaneValidator.php
index 31e6430..b0dbacc 100644
--- a/src/ProfaneValidator.php
+++ b/src/ProfaneValidator.php
@@ -43,7 +43,7 @@ class ProfaneValidator
    */
   public function isProfane($text)
   {
-    return str_contains($text, $this->badwords);
+    return Str::containsCaseless($text, $this->badwords);
   }
 
   public function getBadwords()
diff --git a/src/Str.php b/src/Str.php
new file mode 100644
index 0000000..42152e5
--- /dev/null
+++ b/src/Str.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace LaravelProfane;
+
+class Str
+{
+    /**
+     * Taken from Illuminate\Support\Str
+     * Determine if a given string contains a given word with case insensitive match.
+     *
+     * @param  string  $haystack
+     * @param  string|array  $needles
+     * @return bool
+     */
+    public static function containsCaseless($haystack, $needles)
+    {
+        foreach ((array) $needles as $needle) {
+            $needle = preg_quote($needle);
+            if ($needle != '' && preg_match("/$needle/iu", $haystack)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/tests/ProfaneValidatorTest.php b/tests/ProfaneValidatorTest.php
index f274203..7f69f2a 100644
--- a/tests/ProfaneValidatorTest.php
+++ b/tests/ProfaneValidatorTest.php
@@ -66,6 +66,16 @@ class ProfaneValidatorTest extends PHPUnit_Framework_TestCase
     $this->assertTrue($profane->isProfane($word));
   }
 
+  public function test_can_evaluate_as_caseless_mode()
+  {
+      $word = '<b>FUCK</b> you BITCH if you read this.';
+      $this->mockConfigs();
+
+      $profane = new ProfaneValidator();
+
+      $this->assertTrue($profane->isProfane($word));
+  }
+
   public function test_can_set_dictionary_when_you_pass_a_locale()
   {
     $this->mockConfigs();