diff --git a/libethcore/Ethash.cpp b/libethcore/Ethash.cpp
index 3baac3292..9ec6dd71f 100644
--- a/libethcore/Ethash.cpp
+++ b/libethcore/Ethash.cpp
@@ -56,7 +56,7 @@ namespace eth
 
 const unsigned Ethash::defaultLocalWorkSize = 64;
 const unsigned Ethash::defaultGlobalWorkSizeMultiplier = 512; // * CL_DEFAULT_LOCAL_WORK_SIZE
-const unsigned Ethash::defaultMSPerBatch = 100;
+const unsigned Ethash::defaultMSPerBatch = 0;
 const Ethash::WorkPackage Ethash::NullWorkPackage = Ethash::WorkPackage();
 
 std::string Ethash::name()