diff --git a/samples/mandel/mandel.bat b/samples/mandel/mandel.bat
index a7175eeb5fa728f6f56862d51464457245cd4ded..f66eec73c67cf2ce8e0fef031bdafa5e794eccca 100644
--- a/samples/mandel/mandel.bat
+++ b/samples/mandel/mandel.bat
@@ -1,10 +1,10 @@
 java ^
  -Djava.library.path=../../com.amd.aparapi.jni/dist ^
  -Dcom.amd.aparapi.executionMode=%1 ^
- -Dcom.amd.aparapi.logLevel=ERROR ^
- -Dcom.amd.aparapi.enableVerboseJNI=true ^
+ -Dcom.amd.aparapi.logLevel=SEVERE^
+ -Dcom.amd.aparapi.enableVerboseJNI=false ^
  -Dcom.amd.aparapi.enableProfiling=false ^
- -Dcom.amd.aparapi.enableShowGeneratedOpenCL=true ^
+ -Dcom.amd.aparapi.enableShowGeneratedOpenCL=false ^
  -classpath ../../com.amd.aparapi/dist/aparapi.jar;mandel.jar ^
  com.amd.aparapi.sample.mandel.Main