diff --git a/picard.wdl b/picard.wdl
index eea8d42f2e09958e8d90616b603b02b95c175b62..3d835829f4c54c3a20ee162cf8d115cea3d0b3ac 100644
--- a/picard.wdl
+++ b/picard.wdl
@@ -726,8 +726,6 @@ task MarkDuplicates {
         CREATE_INDEX=true \
         ADD_PG_TAG_TO_READS=false \
         CREATE_MD5_FILE=~{true="true" false="false" createMd5File} \
-        USE_JDK_INFLATER=~{true="true" false="false" useJdkInflater} \
-        USE_JDK_DEFLATER=~{true="true" false="false" useJdkDeflater}
     }
 
     output {