diff --git a/compiler/nim.cfg b/compiler/nim.cfg
index 33ddc6f0b4..cb586a9cb0 100644
--- a/compiler/nim.cfg
+++ b/compiler/nim.cfg
@@ -19,12 +19,6 @@ define:useStdoutAsStdmsg
   styleCheck:error
 @end
 
-# die when the Nim compiler uses more than 4GB:
-@if cpu32:
-  define:"nimMaxHeap=2000"
-@else:
-  define:"nimMaxHeap=4000"
-@end
 
 #define:useNodeIds
 #gc:markAndSweep