diff --git a/config/open_jdk_jre.yml b/config/open_jdk_jre.yml
index e59864353c..de090a5354 100644
--- a/config/open_jdk_jre.yml
+++ b/config/open_jdk_jre.yml
@@ -18,9 +18,9 @@
 repository_root: "{default.repository.root}/openjdk/{platform}/{architecture}"
 version: 1.7.0_+
 memory_sizes:
-  permgen: 64m..
+  permgen: 256m..
 memory_heuristics:
   heap: 75
-  permgen: 10
+  permgen: 5
   stack: 5
   native: 10