diff --git a/tests/codeigniter/libraries/Upload_test.php b/tests/codeigniter/libraries/Upload_test.php
index 1bc1d85cb40..5db602fc441 100644
--- a/tests/codeigniter/libraries/Upload_test.php
+++ b/tests/codeigniter/libraries/Upload_test.php
@@ -107,8 +107,9 @@ function test_set_allowed_types()
 
 	function test_set_image_properties()
 	{
+		$dir = preg_replace('/^(.*\/tests\/).*$/', '$1', __FILE__);
 		$this->upload->file_type = 'image/gif';
-		$this->upload->file_temp = 'mocks/uploads/ci_logo.gif';
+		$this->upload->file_temp = $dir.'mocks/uploads/ci_logo.gif';
 
 		$props = array(
 			'image_width'	=>	170,
@@ -157,7 +158,8 @@ function test_is_allowed_filetype()
 		$this->assertTrue($this->upload->is_allowed_filetype(FALSE));
 		$this->assertTrue($this->upload->is_allowed_filetype(TRUE));
 
-		$this->upload->file_temp = 'mocks/uploads/ci_logo.gif';
+		$dir = preg_replace('/^(.*\/tests\/).*$/', '$1', __FILE__);
+		$this->upload->file_temp = $dir.'mocks/uploads/ci_logo.gif';
 		$this->upload->file_ext = '.gif';
 		$this->upload->file_type = 'image/gif';
 		$this->assertTrue($this->upload->is_allowed_filetype());
@@ -179,8 +181,9 @@ function test_is_allowed_dimensions()
 		$this->upload->file_type = 'text/plain';
 		$this->assertTrue($this->upload->is_allowed_dimensions());
 
+		$dir = preg_replace('/^(.*\/tests\/).*$/', '$1', __FILE__);
 		$this->upload->file_type = 'image/gif';
-		$this->upload->file_temp = 'mocks/uploads/ci_logo.gif';
+		$this->upload->file_temp = $dir.'mocks/uploads/ci_logo.gif';
 
 		$this->upload->max_width = 10;		
 		$this->assertFalse($this->upload->is_allowed_dimensions());
@@ -236,7 +239,8 @@ function test_do_xss_clean()
 		$this->upload->file_temp = vfsStream::url('file3.txt');
 		$this->assertFalse($this->upload->do_xss_clean());
 
-		$this->upload->file_temp = 'mocks/uploads/ci_logo.gif';
+		$dir = preg_replace('/^(.*\/tests\/).*$/', '$1', __FILE__);
+		$this->upload->file_temp = $dir.'mocks/uploads/ci_logo.gif';
 		$this->assertTrue($this->upload->do_xss_clean());
 	}