diff --git a/Zend/tests/gc_035.phpt b/Zend/tests/gc_035.phpt
index 985264c7700..177c3101f9f 100644
--- a/Zend/tests/gc_035.phpt
+++ b/Zend/tests/gc_035.phpt
@@ -1,5 +1,7 @@
 --TEST--
 GC 035: Lost inner-cycles garbage
+--INI--
+zend.enable_gc = 1
 --FILE--
 <?php
 class A {
diff --git a/Zend/tests/generators/gc_with_yield_from.phpt b/Zend/tests/generators/gc_with_yield_from.phpt
index 8c055619909..952352c8539 100644
--- a/Zend/tests/generators/gc_with_yield_from.phpt
+++ b/Zend/tests/generators/gc_with_yield_from.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Verify yield from on generators being properly cycle collected
+--INI--
+zend.enable_gc = 1
 --FILE--
 <?php