diff --git src/wp-includes/media.php src/wp-includes/media.php
index 9d4025d..f41acd8 100644
--- src/wp-includes/media.php
+++ src/wp-includes/media.php
@@ -1046,8 +1046,11 @@ function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attac
 			continue;
 		}
 
-		// Filter out images that are wider than '$max_srcset_image_width'.
-		if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width ) {
+		/*
+		 * Filter out images that are wider than '$max_srcset_image_width' unless
+		 * that file is in the 'src' attribute.
+		 */
+		if ( ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width ) && ( false === strpos( $image_src, $image['file'] ) ) ) {
 			continue;
 		}
 
diff --git tests/phpunit/tests/media.php tests/phpunit/tests/media.php
index ede300f..4028169 100644
--- tests/phpunit/tests/media.php
+++ tests/phpunit/tests/media.php
@@ -936,6 +936,50 @@ EOF;
 	}
 
 	/**
+	 * @ticket 35108
+	 */
+	function test_wp_calculate_image_srcset_include_src() {
+		// Mock data for this test.
+		$size_array = array( 2000, 1000);
+		$image_src = 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test.png';
+		$image_meta = array(
+			'width' => 2000,
+			'height' => 1000,
+			'file' => '2015/12/test.png',
+			'sizes' => array(
+				'thumbnail' => array(
+					'file' => 'test-150x150.png',
+					'width' => 150,
+					'height' => 150,
+					'mime-type' => 'image/png',
+				),
+				'medium' => array(
+					'file' => 'test-300x150.png',
+					'width' => 300,
+					'height' => 150,
+					'mime-type' => 'image/png',
+				),
+				'medium_large' => array(
+					'file' => 'test-768x384.png',
+					'width' => 768,
+					'height' => 384,
+					'mime-type' => 'image/png',
+				),
+				'large' => array(
+					'file' => 'test-1024x512.png',
+					'width' => 1024,
+					'height' => 512,
+					'mime-type' => 'image/png',
+				),
+			),
+		);
+
+		$expected_srcset = 'http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-300x150.png 300w, http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-768x384.png 768w, http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test-1024x512.png 1024w, http://' . WP_TESTS_DOMAIN . '/wp-content/uploads/2015/12/test.png 2000w';
+
+		$this->assertSame( $expected_srcset, wp_calculate_image_srcset( $size_array, $image_src, $image_meta ) );
+	}
+
+	/**
 	 * @ticket 33641
 	 */
 	function test_wp_get_attachment_image_srcset() {