diff --git a/scala/qscript/chartl/RefineGenotypesAndMerge.q b/scala/qscript/chartl/RefineGenotypesAndMerge.q
index 217f844f0..7d535afc7 100755
--- a/scala/qscript/chartl/RefineGenotypesAndMerge.q
+++ b/scala/qscript/chartl/RefineGenotypesAndMerge.q
@@ -57,7 +57,7 @@ class BeagleGenotypeRefinement extends QScript {
     var refine = new BeagleRefinement
     refine.beagleInput = beagleInput.out
     refine.beagleOutputBase = beagleBase
-    refine.beagleMemoryGigs = 20
+    refine.beagleMemoryGigs = 4
     refine.memoryLimit = Some(4)
     refine.freezeOutputs