diff --git a/tests/functional/extension_acp_test.php b/tests/functional/extension_acp_test.php
index e829e4582e..cb908e0f98 100644
--- a/tests/functional/extension_acp_test.php
+++ b/tests/functional/extension_acp_test.php
@@ -27,11 +27,16 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
 
 		self::$helper = new phpbb_test_case_helpers(self);
 
-		// First, move any extensions setup on the board to a temp directory
-		self::$copied_files = self::$helper->copy_dir($phpbb_root_path . 'ext/', $phpbb_root_path . 'store/temp_ext/');
+		self::$copied_files = array();
 
-		// Then empty the ext/ directory on the board (for accurate test cases)
-		self::$helper->empty_dir($phpbb_root_path . 'ext/');
+		if (file_exists($phpbb_root_path . 'ext/'))
+		{
+			// First, move any extensions setup on the board to a temp directory
+			self::$copied_files = self::$helper->copy_dir($phpbb_root_path . 'ext/', $phpbb_root_path . 'store/temp_ext/');
+
+			// Then empty the ext/ directory on the board (for accurate test cases)
+			self::$helper->empty_dir($phpbb_root_path . 'ext/');
+		}
 
 		// Copy our ext/ files from the test case to the board
 		self::$copied_files = array_merge(self::$copied_files, self::$helper->copy_dir(dirname(__FILE__) . '/../extension/ext/', $phpbb_root_path . 'ext/'));