diff --git a/core/_bootstrap.inc.php b/core/_bootstrap.inc.php
index e8d6559a..47be22aa 100644
--- a/core/_bootstrap.inc.php
+++ b/core/_bootstrap.inc.php
@@ -18,17 +18,17 @@ _sanitise_environment();
 
 // load base files
 ctx_log_start("Opening files");
-$files = array_merge(
+$_shm_files = array_merge(
 	zglob("core/*.php"),
 	zglob("ext/{".ENABLED_EXTS."}/main.php")
 );
-foreach($files as $filename) {
-	if(basename($filename)[0] != "_") {
-		require_once $filename;
+foreach($_shm_files as $_shm_filename) {
+	if(basename($_shm_filename)[0] != "_") {
+		require_once $_shm_filename;
 	}
 }
-unset($files);
-unset($filename);
+unset($_shm_files);
+unset($_shm_filename);
 ctx_log_endok();
 
 // connect to the database
diff --git a/tests/test-deep.sh b/tests/test-deep.sh
index bc630357..d08c2012 100755
--- a/tests/test-deep.sh
+++ b/tests/test-deep.sh
@@ -1,9 +1,9 @@
 #!/bin/sh
 php \
-	-d extension.dir=/usr/lib/php/extensions/no-debug-non-zts-20121212/ \
-	-d extension=xdebug.so \
 	-d xdebug.profiler_output_dir=./data/prof/ \
 	-d xdebug.profiler_enable=1 \
 	./vendor/bin/phpunit \
 		--config tests/phpunit.xml \
 		--coverage-clover data/coverage.clover
+#	-d extension.dir=/usr/local/Cellar/php71-xdebug/2.5.5/ \
+#	-d extension=xdebug.so \