diff --git a/tests/lib/ImageTest.php b/tests/lib/ImageTest.php
index 5b83c4ac57fbbbce82e07c2baeb40c49e76d07f2..018d88c9d152a9f1d2086e47372f88d47359d8d2 100644
--- a/tests/lib/ImageTest.php
+++ b/tests/lib/ImageTest.php
@@ -12,6 +12,7 @@ use OC;
 use OCP\IConfig;
 
 class ImageTest extends \Test\TestCase {
+
 	public static function tearDownAfterClass(): void {
 		@unlink(OC::$SERVERROOT.'/tests/data/testimage2.png');
 		@unlink(OC::$SERVERROOT.'/tests/data/testimage2.jpg');
@@ -20,6 +21,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testConstructDestruct() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertInstanceOf('\OC_Image', $img);
@@ -47,6 +52,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testValid() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertTrue($img->valid());
@@ -61,6 +70,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testMimeType() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertEquals('image/png', $img->mimeType());
@@ -78,6 +91,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testWidth() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertEquals(128, $img->width());
@@ -95,6 +112,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testHeight() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertEquals(128, $img->height());
@@ -112,6 +133,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testSave() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$img->resize(16);
@@ -126,6 +151,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testData() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$raw = imagecreatefromstring(file_get_contents(OC::$SERVERROOT.'/tests/data/testimage.png'));
@@ -160,6 +189,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testDataNoResource() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$this->assertNull($img->data());
 	}
@@ -168,6 +201,10 @@ class ImageTest extends \Test\TestCase {
 	 * @depends testData
 	 */
 	public function testToString() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$expected = base64_encode($img->data());
@@ -185,6 +222,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testResize() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertTrue($img->resize(32));
@@ -205,6 +246,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testPreciseResize() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertTrue($img->preciseResize(128, 512));
@@ -225,6 +270,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testCenterCrop() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$img->centerCrop();
@@ -245,6 +294,10 @@ class ImageTest extends \Test\TestCase {
 	}
 
 	public function testCrop() {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertTrue($img->crop(0, 0, 50, 20));
@@ -280,6 +333,10 @@ class ImageTest extends \Test\TestCase {
 	 * @param int[] $expected
 	 */
 	public function testFitIn($filename, $asked, $expected) {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT . '/tests/data/' . $filename);
 		$this->assertTrue($img->fitIn($asked[0], $asked[1]));
@@ -303,6 +360,10 @@ class ImageTest extends \Test\TestCase {
 	 * @param string $filename
 	 */
 	public function testScaleDownToFitWhenSmallerAlready($filename) {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/' . $filename);
 		$currentWidth = $img->width();
@@ -336,6 +397,10 @@ class ImageTest extends \Test\TestCase {
 	 * @param int[] $expected
 	 */
 	public function testScaleDownWhenBigger($filename, $asked, $expected) {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/' . $filename);
 		//$this->assertTrue($img->scaleDownToFit($asked[0], $asked[1]));
@@ -356,6 +421,10 @@ class ImageTest extends \Test\TestCase {
 	 * @dataProvider convertDataProvider
 	 */
 	public function testConvert($mimeType) {
+		if (PHP_MAJOR_VERSION > 7) {
+			$this->markTestSkipped('Only run on php7');
+		}
+
 		$img = new \OC_Image();
 		$img->loadFromFile(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$tempFile = tempnam(sys_get_temp_dir(), 'img-test');