diff --git a/tests/phpunit/tests/attachment/slashes.php b/tests/phpunit/tests/attachment/slashes.php
index dec69343a3..412e829a07 100644
--- a/tests/phpunit/tests/attachment/slashes.php
+++ b/tests/phpunit/tests/attachment/slashes.php
@@ -13,7 +13,7 @@ class Tests_Attachment_Slashes extends WP_UnitTestCase {
 		wp_set_current_user( $this->author_id );
 
 		// it is important to test with both even and odd numbered slashes as
-		// kses does a strip-then-add slashes in some of it's function calls
+		// kses does a strip-then-add slashes in some of its function calls
 		$this->slash_1 = 'String with 1 slash \\';
 		$this->slash_2 = 'String with 2 slashes \\\\';
 		$this->slash_3 = 'String with 3 slashes \\\\\\';
diff --git a/tests/phpunit/tests/comment/slashes.php b/tests/phpunit/tests/comment/slashes.php
index ccd64d5a68..d22df5c855 100644
--- a/tests/phpunit/tests/comment/slashes.php
+++ b/tests/phpunit/tests/comment/slashes.php
@@ -14,7 +14,7 @@ class Tests_Comment_Slashes extends WP_UnitTestCase {
 		wp_set_current_user( $this->author_id );
 
 		// it is important to test with both even and odd numbered slashes as
-		// kses does a strip-then-add slashes in some of it's function calls
+		// kses does a strip-then-add slashes in some of its function calls
 		$this->slash_1 = 'String with 1 slash \\';
 		$this->slash_2 = 'String with 2 slashes \\\\';
 		$this->slash_3 = 'String with 3 slashes \\\\\\';
diff --git a/tests/phpunit/tests/option/slashes.php b/tests/phpunit/tests/option/slashes.php
index ece4f85ca8..6703b3d2a2 100644
--- a/tests/phpunit/tests/option/slashes.php
+++ b/tests/phpunit/tests/option/slashes.php
@@ -9,7 +9,7 @@ class Tests_Option_Slashes extends WP_UnitTestCase {
 	function setUp() {
 		parent::setUp();
 		// it is important to test with both even and odd numbered slashes as
-		// kses does a strip-then-add slashes in some of it's function calls
+		// kses does a strip-then-add slashes in some of its function calls
 		$this->slash_1 = 'String with 1 slash \\';
 		$this->slash_2 = 'String with 2 slashes \\\\';
 		$this->slash_3 = 'String with 3 slashes \\\\\\';
diff --git a/tests/phpunit/tests/post/slashes.php b/tests/phpunit/tests/post/slashes.php
index c74aebe318..4a9f8be3ad 100644
--- a/tests/phpunit/tests/post/slashes.php
+++ b/tests/phpunit/tests/post/slashes.php
@@ -13,7 +13,7 @@ class Tests_Post_Slashes extends WP_UnitTestCase {
 		wp_set_current_user( $this->author_id );
 
 		// it is important to test with both even and odd numbered slashes as
-		// kses does a strip-then-add slashes in some of it's function calls
+		// kses does a strip-then-add slashes in some of its function calls
 		$this->slash_1 = 'String with 1 slash \\';
 		$this->slash_2 = 'String with 2 slashes \\\\';
 		$this->slash_3 = 'String with 3 slashes \\\\\\';
diff --git a/tests/phpunit/tests/user/slashes.php b/tests/phpunit/tests/user/slashes.php
index 812a6ab26e..2decb33f83 100644
--- a/tests/phpunit/tests/user/slashes.php
+++ b/tests/phpunit/tests/user/slashes.php
@@ -13,7 +13,7 @@ class Tests_User_Slashes extends WP_UnitTestCase {
 		wp_set_current_user( $this->author_id );
 
 		// it is important to test with both even and odd numbered slashes as
-		// kses does a strip-then-add slashes in some of it's function calls
+		// kses does a strip-then-add slashes in some of its function calls
 		$this->slash_1 = 'String with 1 slash \\';
 		$this->slash_2 = 'String with 2 slashes \\\\';
 		$this->slash_3 = 'String with 3 slashes \\\\\\';