diff --git a/build/scripts/utils.gant b/build/scripts/utils.gant
index d36c47181a3c..73c2b33efe52 100644
--- a/build/scripts/utils.gant
+++ b/build/scripts/utils.gant
@@ -53,7 +53,7 @@ binding.setVariable("isEap", {
 })
 
 binding.setVariable("mem32", "-Xms128m -Xmx512m -XX:MaxPermSize=250m -XX:ReservedCodeCacheSize=64m -XX:+UseCodeCacheFlushing")
-binding.setVariable("mem64", "-Xms128m -Xmx800m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=70m -XX:+UseCodeCacheFlushing")
+binding.setVariable("mem64", "-Xms128m -Xmx800m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=64m -XX:+UseCodeCacheFlushing")
 binding.setVariable("common_vmoptions", "-ea")
 
 binding.setVariable("vmOptions", { "$common_vmoptions ${isEap() ? '-XX:+HeapDumpOnOutOfMemoryError' : ''}".trim() })