diff --git a/tests/phpunit/tests/image/intermediate_size.php b/tests/phpunit/tests/image/intermediate_size.php
index db80f94abf..0d218172f8 100644
--- a/tests/phpunit/tests/image/intermediate_size.php
+++ b/tests/phpunit/tests/image/intermediate_size.php
@@ -214,26 +214,27 @@ class Tests_Image_Intermediate_Size extends WP_UnitTestCase {
 	}
 
 	/**
-	* @ticket 17626
-	*/
+	 * @ticket 17626
+	 * @ticket 34087
+	 */
 	function test_get_intermediate_sizes_by_array_zero_width() {
-		// Generate random height
-		$random_h = rand( 200, 300 );
+		// 202 is the smallest height that will trigger a miss for 'false-height'.
+		$height = 202;
 
 		// Only one dimention match shouldn't return false positive (see: 17626)
-		add_image_size( 'test-size', 0, $random_h, false );
-		add_image_size( 'false-height', 300, $random_h, true );
+		add_image_size( 'test-size', 0, $height, false );
+		add_image_size( 'false-height', 300, $height, true );
 
 		$file = DIR_TESTDATA . '/images/waffles.jpg';
 		$id = $this->_make_attachment( $file, 0 );
 
 		$original = wp_get_attachment_metadata( $id );
-		$image_h = $random_h;
+		$image_h = $height;
 		$image_w = round( ( $image_h / $original['height'] ) * $original['width'] );
 
 		// look for a size by array that exists
 		// note: staying larger than 300px to miss default medium crop
-		$image = image_get_intermediate_size( $id, array( 0, $random_h ) );
+		$image = image_get_intermediate_size( $id, array( 0, $height ) );
 
 		// test for the expected string because the array will by definition
 		// return with the correct height and width attributes
@@ -243,4 +244,31 @@ class Tests_Image_Intermediate_Size extends WP_UnitTestCase {
 		remove_image_size( 'test-size' );
 		remove_image_size( 'false-height' );
 	}
+
+	/**
+	 * @ticket 17626
+	 * @ticket 34087
+	 */
+	public function test_get_intermediate_sizes_should_match_size_with_off_by_one_aspect_ratio() {
+		// Original is 600x400. 300x201 is close enough to match.
+		$width  = 300;
+		$height = 201;
+		add_image_size( 'off-by-one', $width, $height, true );
+
+		$file = DIR_TESTDATA . '/images/waffles.jpg';
+		$id = $this->_make_attachment( $file, 0 );
+
+		$original = wp_get_attachment_metadata( $id );
+		$image_h = $height;
+		$image_w = round( ( $image_h / $original['height'] ) * $original['width'] );
+
+		// look for a size by array that exists
+		// note: staying larger than 300px to miss default medium crop
+		$image = image_get_intermediate_size( $id, array( 0, $height ) );
+
+		$this->assertTrue( strpos( $image['file'], $width . 'x' . $height ) > 0 );
+
+		// cleanup
+		remove_image_size( 'off-by-one' );
+	}
 }