diff --git a/runtests.py b/runtests.py
index 367e6ac..00e492b 100755
--- a/runtests.py
+++ b/runtests.py
@@ -10,6 +10,7 @@ if not (PYPY or JYTHON or IRONPYTHON):
 
     @atexit.register
     def report_uncollectable():
+        import gc
         if not gc.garbage:
             print("No garbages!")
             return