diff --git a/src/wp-includes/class-wp-comment.php b/src/wp-includes/class-wp-comment.php
index 80ef9bb1d3..0e9f88a352 100644
--- a/src/wp-includes/class-wp-comment.php
+++ b/src/wp-includes/class-wp-comment.php
@@ -191,12 +191,11 @@ final class WP_Comment {
 	public static function get_instance( $id ) {
 		global $wpdb;
 
-		if ( ! is_numeric( $id ) || $id != floor( $id ) || ! $id ) {
+		$comment_id = (int) $id;
+		if ( ! $comment_id ) {
 			return false;
 		}
 
-		$comment_id = (int) $id;
-
 		$_comment = wp_cache_get( $comment_id, 'comment' );
 
 		if ( ! $_comment ) {
diff --git a/src/wp-includes/class-wp-post.php b/src/wp-includes/class-wp-post.php
index c966934899..edaf149a3f 100644
--- a/src/wp-includes/class-wp-post.php
+++ b/src/wp-includes/class-wp-post.php
@@ -210,12 +210,11 @@ final class WP_Post {
 	public static function get_instance( $post_id ) {
 		global $wpdb;
 
-		if ( ! is_numeric( $post_id ) || $post_id != floor( $post_id ) || ! $post_id ) {
+		$post_id = (int) $post_id;
+		if ( ! $post_id ) {
 			return false;
 		}
 
-		$post_id = (int) $post_id;
-
 		$_post = wp_cache_get( $post_id, 'posts' );
 
 		if ( ! $_post ) {
diff --git a/src/wp-includes/class-wp-term.php b/src/wp-includes/class-wp-term.php
index 6cb4a15bd8..8eb87efbe0 100644
--- a/src/wp-includes/class-wp-term.php
+++ b/src/wp-includes/class-wp-term.php
@@ -125,12 +125,11 @@ final class WP_Term {
 	public static function get_instance( $term_id, $taxonomy = null ) {
 		global $wpdb;
 
-		if ( ! is_numeric( $term_id ) || $term_id != floor( $term_id ) || ! $term_id ) {
+		$term_id = (int) $term_id;
+		if ( ! $term_id ) {
 			return false;
 		}
 
-		$term_id = (int) $term_id;
-
 		$_term = wp_cache_get( $term_id, 'terms' );
 
 		// If there isn't a cached version, hit the database.
diff --git a/tests/phpunit/tests/comment/wpComment.php b/tests/phpunit/tests/comment/wpComment.php
index 5e3566d346..e11a14fb33 100644
--- a/tests/phpunit/tests/comment/wpComment.php
+++ b/tests/phpunit/tests/comment/wpComment.php
@@ -49,15 +49,6 @@ class Tests_Term_WpComment extends WP_UnitTestCase {
 		$this->assertFalse( $found );
 	}
 
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_bool() {
-		$found = WP_Comment::get_instance( true );
-
-		$this->assertFalse( $found );
-	}
-
 	/**
 	 * @ticket 37738
 	 */
@@ -66,32 +57,4 @@ class Tests_Term_WpComment extends WP_UnitTestCase {
 
 		$this->assertEquals( 1, $found->comment_ID );
 	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_float() {
-		$found = WP_Comment::get_instance( 1.6 );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_array() {
-		$found = WP_Comment::get_instance( array( 1 ) );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_class() {
-		$class = new stdClass();
-		$found = WP_Comment::get_instance( $class );
-
-		$this->assertFalse( $found );
-	}
 }
diff --git a/tests/phpunit/tests/post/wpPost.php b/tests/phpunit/tests/post/wpPost.php
index a2e3d5a082..9b0c0995df 100644
--- a/tests/phpunit/tests/post/wpPost.php
+++ b/tests/phpunit/tests/post/wpPost.php
@@ -47,15 +47,6 @@ class Tests_Post_WpPost extends WP_UnitTestCase {
 		$this->assertFalse( $found );
 	}
 
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_bool() {
-		$found = WP_Post::get_instance( true );
-
-		$this->assertFalse( $found );
-	}
-
 	/**
 	 * @ticket 37738
 	 */
@@ -64,32 +55,4 @@ class Tests_Post_WpPost extends WP_UnitTestCase {
 
 		$this->assertSame( 1, $found->ID );
 	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_float() {
-		$found = WP_Post::get_instance( 1.6 );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_array() {
-		$found = WP_Post::get_instance( array( 1 ) );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_class() {
-		$class = new stdClass();
-		$found = WP_Post::get_instance( $class );
-
-		$this->assertFalse( $found );
-	}
 }
diff --git a/tests/phpunit/tests/term/wpTerm.php b/tests/phpunit/tests/term/wpTerm.php
index a878136d81..9154633f1e 100644
--- a/tests/phpunit/tests/term/wpTerm.php
+++ b/tests/phpunit/tests/term/wpTerm.php
@@ -60,15 +60,6 @@ class Tests_Term_WpTerm extends WP_UnitTestCase {
 		$this->assertFalse( $found );
 	}
 
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_bool() {
-		$found = WP_Term::get_instance( true );
-
-		$this->assertFalse( $found );
-	}
-
 	/**
 	 * @ticket 37738
 	 */
@@ -77,32 +68,4 @@ class Tests_Term_WpTerm extends WP_UnitTestCase {
 
 		$this->assertSame( 1, $found->term_id );
 	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_float() {
-		$found = WP_Term::get_instance( 1.6 );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_array() {
-		$found = WP_Term::get_instance( array( 1 ) );
-
-		$this->assertFalse( $found );
-	}
-
-	/**
-	 * @ticket 37738
-	 */
-	public function test_get_instance_should_fail_for_class() {
-		$class = new stdClass();
-		$found = WP_Term::get_instance( $class );
-
-		$this->assertFalse( $found );
-	}
 }