diff --git a/jerry-core/ecma/base/ecma-gc.c b/jerry-core/ecma/base/ecma-gc.c
index c2d346cc7..7fbd25a53 100644
--- a/jerry-core/ecma/base/ecma-gc.c
+++ b/jerry-core/ecma/base/ecma-gc.c
@@ -242,6 +242,9 @@ ecma_gc_init (void)
 {
   ecma_gc_objects_lists[ECMA_GC_COLOR_WHITE_GRAY] = NULL;
   ecma_gc_objects_lists[ECMA_GC_COLOR_BLACK] = NULL;
+  ecma_gc_visited_flip_flag = false;
+  ecma_gc_objects_number = 0;
+  ecma_gc_new_objects_since_last_gc = 0;
 } /* ecma_gc_init */
 
 /**
diff --git a/jerry-core/ecma/base/ecma-init-finalize.c b/jerry-core/ecma/base/ecma-init-finalize.c
index f9440d6ba..ad7df3af6 100644
--- a/jerry-core/ecma/base/ecma-init-finalize.c
+++ b/jerry-core/ecma/base/ecma-init-finalize.c
@@ -34,6 +34,7 @@
 void
 ecma_init (void)
 {
+  ecma_gc_init ();
   ecma_init_builtins ();
   ecma_lcache_init ();
   ecma_init_environment ();