diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index 4a06e5e701..1c13f3ff8a 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -17,7 +17,7 @@ const
   debugGC = false # we wish to debug the GC...
   logGC = false
   traceGC = false # extensive debugging
-  alwaysCycleGC = true
+  alwaysCycleGC = false
   alwaysGC = defined(fulldebug) # collect after every memory
                                 # allocation (for debugging)
   leakDetector = false